91372683916836 has 81 divisors (see below), whose sum is σ = 268680382047441. Its totient is φ = 26106366412224.

The previous prime is 91372683916733. The next prime is 91372683916837. The reversal of 91372683916836 is 63861938627319.

The square root of 91372683916836 is 9558906.

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

91372683916836 is a `hidden beast` number, since 9 + 1 + 372 + 6 + 83 + 91 + 68 + 36 = 666.

91372683916836 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 91269935460900 + 102748455936 = 9553530^2 + 320544^2 .

It is not an unprimeable number, because it can be changed into a prime (91372683916837) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 401360256 + ... + 401587848.

Almost surely, 2^{91372683916836} is an apocalyptic number.

91372683916836 is the 9558906-th square number.

It is an amenable number.

91372683916836 is an abundant number, since it is smaller than the sum of its proper divisors (177307698130605).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91372683916836 is an frugal number, since it uses more digits than its factorization.

91372683916836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455210 (or 227605 counting only the distinct ones).

The product of its digits is 423263232, while the sum is 72.

The spelling of 91372683916836 in words is "ninety-one trillion, three hundred seventy-two billion, six hundred eighty-three million, nine hundred sixteen thousand, eight hundred thirty-six".