76538886671961 has 32 divisors (see below), whose sum is σ = 136410157260800. Its totient is φ = 41434585264080.

The previous prime is 76538886671957. The next prime is 76538886671987. The reversal of 76538886671961 is 16917668883567.

76538886671961 is a `hidden beast` number, since 7 + 6 + 5 + 388 + 86 + 6 + 71 + 96 + 1 = 666.

It is not a de Polignac number, because 76538886671961 - 2² = 76538886671957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76538886679961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10657039945 + ... + 10657047126.

It is an arithmetic number, because the mean of its divisors is an integer number (4262817414400).

Almost surely, 2^{76538886671961} is an apocalyptic number.

It is an amenable number.

76538886671961 is a deficient number, since it is larger than the sum of its proper divisors (59871270588839).

76538886671961 is a wasteful number, since it uses less digits than its factorization.

76538886671961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21314087106 (or 21314087100 counting only the distinct ones).

The product of its digits is 4389396480, while the sum is 81.

The spelling of 76538886671961 in words is "seventy-six trillion, five hundred thirty-eight billion, eight hundred eighty-six million, six hundred seventy-one thousand, nine hundred sixty-one".