91477740480 has 448 divisors, whose sum is σ = 354359992320. Its totient is φ = 19527782400.

The previous prime is 91477740457. The next prime is 91477740493. The reversal of 91477740480 is 8404777419.

It is a tau number, because it is divible by the number of its divisors (448).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9060235 + ... + 9070325.

Almost surely, 2^91477740480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91477740480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177179996160).

91477740480 is an abundant number, since it is smaller than the sum of its proper divisors (262882251840).

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

91477740480 is a wasteful number, since it uses less digits than its factorization.

91477740480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10208 (or 10198 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 51.

The spelling of 91477740480 in words is "ninety-one billion, four hundred seventy-seven million, seven hundred forty thousand, four hundred eighty".