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68254044841 = 234187782531
BaseRepresentation
bin111111100100010000…
…100001001010101001
320112011202000201122201
4333210100201022221
52104241013413331
651204441020201
74634253544243
oct774420411251
9215152021581
1068254044841
1126a456a1124
121128a184661
1365897caaa8
143436bab093
151b971d0a61
hexfe44212a9

68254044841 has 16 divisors (see below), whose sum is σ = 73042800768. Its totient is φ = 63620726400.

The previous prime is 68254044839. The next prime is 68254044871. The reversal of 68254044841 is 14844045286.

It is a cyclic number.

It is not a de Polignac number, because 68254044841 - 21 = 68254044839 is a prime.

It is a super-2 number, since 2×682540448412 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68254044791 and 68254044800.

It is not an unprimeable number, because it can be changed into a prime (68254044871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 785746 + ... + 868276.

It is an arithmetic number, because the mean of its divisors is an integer number (4565175048).

Almost surely, 268254044841 is an apocalyptic number.

It is an amenable number.

68254044841 is a deficient number, since it is larger than the sum of its proper divisors (4788755927).

68254044841 is a wasteful number, since it uses less digits than its factorization.

68254044841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83472.

The product of its (nonzero) digits is 983040, while the sum is 46.

The spelling of 68254044841 in words is "sixty-eight billion, two hundred fifty-four million, forty-four thousand, eight hundred forty-one".

Divisors: 1 23 41 877 943 20171 35957 82531 827011 1898213 3383771 72379687 77826733 1664732801 2967567167 68254044841