91477173496880 has 20 divisors (see below), whose sum is σ = 212684428380432. Its totient is φ = 36590869398720.

The previous prime is 91477173496879. The next prime is 91477173496921. The reversal of 91477173496880 is 8869437177419.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 91477173496798 and 91477173496807.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571732334276 + ... + 571732334435.

Almost surely, 2^{91477173496880} is an apocalyptic number.

It is an amenable number.

91477173496880 is an abundant number, since it is smaller than the sum of its proper divisors (121207254883552).

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

91477173496880 is a wasteful number, since it uses less digits than its factorization.

91477173496880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143464668724 (or 1143464668718 counting only the distinct ones).

The product of its (nonzero) digits is 512096256, while the sum is 74.

The spelling of 91477173496880 in words is "ninety-one trillion, four hundred seventy-seven billion, one hundred seventy-three million, four hundred ninety-six thousand, eight hundred eighty".