91814411052 has 72 divisors (see below), whose sum is σ = 285644844576. Its totient is φ = 24214788864.

The previous prime is 91814411033. The next prime is 91814411057. The reversal of 91814411052 is 25011441819.

91814411052 is a `hidden beast` number, since 91 + 81 + 441 + 1 + 0 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 91814410998 and 91814411016.

It is not an unprimeable number, because it can be changed into a prime (91814411057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14009913 + ... + 14016464.

It is an arithmetic number, because the mean of its divisors is an integer number (3967289508).

Almost surely, 2^91814411052 is an apocalyptic number.

It is an amenable number.

91814411052 is an abundant number, since it is smaller than the sum of its proper divisors (193830433524).

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

91814411052 is a wasteful number, since it uses less digits than its factorization.

91814411052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28026407 (or 28026402 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The spelling of 91814411052 in words is "ninety-one billion, eight hundred fourteen million, four hundred eleven thousand, fifty-two".