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61798544941 = 778989111767
BaseRepresentation
bin111001100011011110…
…101111011000101101
312220111211212100120211
4321203132233120231
52003030411414231
644220113142421
74315265651650
oct714336573055
9186454770524
1061798544941
1124232738541
12bb8825aa11
135a9b25ab73
142dc36ab897
15191a5beeb1
hexe637af62d

61798544941 has 8 divisors (see below), whose sum is σ = 70628434560. Its totient is φ = 52969036848.

The previous prime is 61798544939. The next prime is 61798544971. The reversal of 61798544941 is 14944589716.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61798544941 - 21 = 61798544939 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61798544921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497040 + ... + 608806.

It is an arithmetic number, because the mean of its divisors is an integer number (8828554320).

Almost surely, 261798544941 is an apocalyptic number.

It is an amenable number.

61798544941 is a deficient number, since it is larger than the sum of its proper divisors (8829889619).

61798544941 is a wasteful number, since it uses less digits than its factorization.

61798544941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190763.

The product of its digits is 8709120, while the sum is 58.

The spelling of 61798544941 in words is "sixty-one billion, seven hundred ninety-eight million, five hundred forty-four thousand, nine hundred forty-one".

Divisors: 1 7 78989 111767 552923 782369 8828363563 61798544941