21504073092 has 48 divisors (see below), whose sum is σ = 53315583552. Its totient is φ = 6722519040.

The previous prime is 21504073091. The next prime is 21504073139. The reversal of 21504073092 is 29037040512.

It is not an unprimeable number, because it can be changed into a prime (21504073091) 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, 128509 + ... + 243972.

It is an arithmetic number, because the mean of its divisors is an integer number (1110741324).

Almost surely, 2^21504073092 is an apocalyptic number.

It is an amenable number.

21504073092 is an abundant number, since it is smaller than the sum of its proper divisors (31811510460).

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

21504073092 is a wasteful number, since it uses less digits than its factorization.

21504073092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372788 (or 372786 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The spelling of 21504073092 in words is "twenty-one billion, five hundred four million, seventy-three thousand, ninety-two".