537638390400 has 96 divisors (see below), whose sum is σ = 1770846480000. Its totient is φ = 143370234880.

The previous prime is 537638390363. The next prime is 537638390411. The reversal of 537638390400 is 4093836735.

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 (48).

It is a self number, because there is not a number n which added to its sum of digits gives 537638390400.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27992400 + ... + 28011599.

It is an arithmetic number, because the mean of its divisors is an integer number (18446317500).

Almost surely, 2^537638390400 is an apocalyptic number.

537638390400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

537638390400 is an abundant number, since it is smaller than the sum of its proper divisors (1233208089600).

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

537638390400 is a wasteful number, since it uses less digits than its factorization.

537638390400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56004026 (or 56004009 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 48.

The spelling of 537638390400 in words is "five hundred thirty-seven billion, six hundred thirty-eight million, three hundred ninety thousand, four hundred".