42591944928 has 96 divisors (see below), whose sum is σ = 126741283200. Its totient is φ = 12415458816.

The previous prime is 42591944869. The next prime is 42591944999. The reversal of 42591944928 is 82944919524.

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

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

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, 874398 + ... + 921821.

It is an arithmetic number, because the mean of its divisors is an integer number (1320221700).

Almost surely, 2^42591944928 is an apocalyptic number.

42591944928 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

42591944928 is an abundant number, since it is smaller than the sum of its proper divisors (84149338272).

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

42591944928 is a wasteful number, since it uses less digits than its factorization.

42591944928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796264 (or 1796256 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 57.

The spelling of 42591944928 in words is "forty-two billion, five hundred ninety-one million, nine hundred forty-four thousand, nine hundred twenty-eight".