91348589256 has 64 divisors (see below), whose sum is σ = 229683115200. Its totient is φ = 30275140608.

The previous prime is 91348589249. The next prime is 91348589389. The reversal of 91348589256 is 65298584319.

It is a super-2 number, since 2×91348589256² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91348589256.

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 15 ways as a sum of consecutive naturals, for example, 2998356 + ... + 3028668.

It is an arithmetic number, because the mean of its divisors is an integer number (3588798675).

Almost surely, 2^91348589256 is an apocalyptic number.

It is an amenable number.

91348589256 is an abundant number, since it is smaller than the sum of its proper divisors (138334525944).

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

91348589256 is a wasteful number, since it uses less digits than its factorization.

91348589256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31038 (or 31034 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 60.

The spelling of 91348589256 in words is "ninety-one billion, three hundred forty-eight million, five hundred eighty-nine thousand, two hundred fifty-six".