91471614780 has 96 divisors (see below), whose sum is σ = 315225275904. Its totient is φ = 19299504384.

The previous prime is 91471614691. The next prime is 91471614953. The reversal of 91471614780 is 8741617419.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8371062 + ... + 8381981.

It is an arithmetic number, because the mean of its divisors is an integer number (3283596624).

Almost surely, 2^91471614780 is an apocalyptic number.

It is an amenable number.

91471614780 is an abundant number, since it is smaller than the sum of its proper divisors (223753661124).

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

91471614780 is a wasteful number, since it uses less digits than its factorization.

91471614780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16753075 (or 16753073 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 48.

The spelling of 91471614780 in words is "ninety-one billion, four hundred seventy-one million, six hundred fourteen thousand, seven hundred eighty".