91226957652 has 36 divisors (see below), whose sum is σ = 230614567456. Its totient is φ = 30407259600.

The previous prime is 91226957629. The next prime is 91226957671. The reversal of 91226957652 is 25675962219.

91226957652 is a `hidden beast` number, since 9 + 1 + 2 + 2 + 69 + 576 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 678183 + ... + 801489.

Almost surely, 2^91226957652 is an apocalyptic number.

It is an amenable number.

91226957652 is an abundant number, since it is smaller than the sum of its proper divisors (139387609804).

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

91226957652 is a wasteful number, since it uses less digits than its factorization.

91226957652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143868 (or 143863 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The spelling of 91226957652 in words is "ninety-one billion, two hundred twenty-six million, nine hundred fifty-seven thousand, six hundred fifty-two".