91752044836 has 81 divisors (see below), whose sum is σ = 174663355377. Its totient is φ = 42164515200.

The previous prime is 91752044743. The next prime is 91752044861. The reversal of 91752044836 is 63844025719.

It is a happy number.

The square root of 91752044836 is 302906.

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., 71433252900 + 20318791936 = 267270^2 + 142544^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91752044836.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 607629361 + ... + 607629511.

It is a 2-persistent number, because it is pandigital, and so is 2⋅91752044836 = 183504089672, but 3⋅91752044836 = 275256134508 is not.

Almost surely, 2^91752044836 is an apocalyptic number.

91752044836 is the 302906-th square number.

It is an amenable number.

91752044836 is a deficient number, since it is larger than the sum of its proper divisors (82911310541).

91752044836 is a wasteful number, since it uses less digits than its factorization.

91752044836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

Multiplying 91752044836 by its sum of digits (49), we get a square (4495850196964 = 2120342²).

The spelling of 91752044836 in words is "ninety-one billion, seven hundred fifty-two million, forty-four thousand, eight hundred thirty-six".