91156455500 has 48 divisors (see below), whose sum is σ = 217184411808. Its totient is φ = 33147800000.

The previous prime is 91156455407. The next prime is 91156455521. The reversal of 91156455500 is 555465119.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8281451 + ... + 8292450.

It is an arithmetic number, because the mean of its divisors is an integer number (4524675246).

Almost surely, 2^91156455500 is an apocalyptic number.

It is an amenable number.

91156455500 is an abundant number, since it is smaller than the sum of its proper divisors (126027956308).

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

91156455500 is a wasteful number, since it uses less digits than its factorization.

91156455500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16573931 (or 16573919 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 91156455500 in words is "ninety-one billion, one hundred fifty-six million, four hundred fifty-five thousand, five hundred".