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155246242151 = 71113417694919
BaseRepresentation
bin1001000010010101100…
…1011010100101100111
3112211201101012020011102
42100211121122211213
510020421014222101
6155152533430315
714134101166610
oct2204531324547
9484641166142
10155246242151
115a926502570
122610779b39b
1311841436160
14772a430c07
15408947686b
hex242565a967

155246242151 has 64 divisors (see below), whose sum is σ = 213847603200. Its totient is φ = 108778291200.

The previous prime is 155246242139. The next prime is 155246242157. The reversal of 155246242151 is 151242642551.

It is a cyclic number.

It is not a de Polignac number, because 155246242151 - 214 = 155246225767 is a prime.

It is a super-3 number, since 3×1552462421513 (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155246242157) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31558070 + ... + 31562988.

It is an arithmetic number, because the mean of its divisors is an integer number (3341368800).

Almost surely, 2155246242151 is an apocalyptic number.

155246242151 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

155246242151 is a deficient number, since it is larger than the sum of its proper divisors (58601361049).

155246242151 is a wasteful number, since it uses less digits than its factorization.

155246242151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5760.

The product of its digits is 96000, while the sum is 38.

The spelling of 155246242151 in words is "one hundred fifty-five billion, two hundred forty-six million, two hundred forty-two thousand, one hundred fifty-one".

Divisors: 1 7 11 13 41 77 91 143 287 451 533 769 1001 3157 3731 4919 5383 5863 8459 9997 31529 34433 41041 54109 59213 63947 69979 109967 201679 220703 346819 378763 409877 447629 703417 769769 1411753 2218469 2427733 2621827 2869139 3782711 4508647 4923919 15529283 18352789 26478977 28840097 31560529 41609821 49175243 155091151 201880679 291268747 344226701 540927673 1085638057 1706002661 2016184963 3786493711 11942018627 14113294741 22178034593 155246242151