203391097504 has 24 divisors (see below), whose sum is σ = 457629969888. Its totient is φ = 87167613120.

The previous prime is 203391097499. The next prime is 203391097513. The reversal of 203391097504 is 405790193302.

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, 453997762 + ... + 453998209.

It is an arithmetic number, because the mean of its divisors is an integer number (19067915412).

Almost surely, 2^203391097504 is an apocalyptic number.

It is an amenable number.

203391097504 is an abundant number, since it is smaller than the sum of its proper divisors (254238872384).

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

203391097504 is an equidigital number, since it uses as much as digits as its factorization.

203391097504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907995988 (or 907995980 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 43.

The spelling of 203391097504 in words is "two hundred three billion, three hundred ninety-one million, ninety-seven thousand, five hundred four".