91338621024 has 96 divisors (see below), whose sum is σ = 279186082560. Its totient is φ = 25604347392.

The previous prime is 91338621019. The next prime is 91338621029. The reversal of 91338621024 is 42012683319.

It is an interprime number because it is at equal distance from previous prime (91338621019) and next prime (91338621029).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91338621029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1246654 + ... + 1317885.

It is an arithmetic number, because the mean of its divisors is an integer number (2908188360).

Almost surely, 2^91338621024 is an apocalyptic number.

It is an amenable number.

91338621024 is an abundant number, since it is smaller than the sum of its proper divisors (187847461536).

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

91338621024 is a wasteful number, since it uses less digits than its factorization.

91338621024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564612 (or 2564604 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 91338621024 in words is "ninety-one billion, three hundred thirty-eight million, six hundred twenty-one thousand, twenty-four".