91995069056836 has 27 divisors (see below), whose sum is σ = 176957863106493. Its totient is φ = 41815844566320.

The previous prime is 91995069056753. The next prime is 91995069056837. The reversal of 91995069056836 is 63865096059919.

It is a happy number.

The square root of 91995069056836 is 9591406.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 16880676132100 + 75114392924736 = 4108610^2 + 8666856^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91995069056837) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 210792946 + ... + 211228918.

Almost surely, 2^{91995069056836} is an apocalyptic number.

91995069056836 is the 9591406-th square number.

It is an amenable number.

91995069056836 is a deficient number, since it is larger than the sum of its proper divisors (84962794049657).

91995069056836 is an frugal number, since it uses more digits than its factorization.

91995069056836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871972 (or 435986 counting only the distinct ones).

The product of its (nonzero) digits is 850305600, while the sum is 76.

The spelling of 91995069056836 in words is "ninety-one trillion, nine hundred ninety-five billion, sixty-nine million, fifty-six thousand, eight hundred thirty-six".