203423591904 has 384 divisors, whose sum is σ = 597445632000. Its totient is φ = 60222210048.

The previous prime is 203423591879. The next prime is 203423591911. The reversal of 203423591904 is 409195324302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 851144617 + ... + 851144855.

It is an arithmetic number, because the mean of its divisors is an integer number (1555848000).

Almost surely, 2^203423591904 is an apocalyptic number.

203423591904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203423591904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298722816000).

203423591904 is an abundant number, since it is smaller than the sum of its proper divisors (394022040096).

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

203423591904 is a wasteful number, since it uses less digits than its factorization.

203423591904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 203423591904 in words is "two hundred three billion, four hundred twenty-three million, five hundred ninety-one thousand, nine hundred four".