21054969232 has 40 divisors (see below), whose sum is σ = 45002610720. Its totient is φ = 9462900480.

The previous prime is 21054969223. The next prime is 21054969233. The reversal of 21054969232 is 23296945012.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (21054969233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656418 + ... + 687745.

It is an arithmetic number, because the mean of its divisors is an integer number (1125065268).

Almost surely, 2^21054969232 is an apocalyptic number.

21054969232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21054969232 is an abundant number, since it is smaller than the sum of its proper divisors (23947641488).

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

21054969232 is a wasteful number, since it uses less digits than its factorization.

21054969232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344271 (or 1344265 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 21054969232 in words is "twenty-one billion, fifty-four million, nine hundred sixty-nine thousand, two hundred thirty-two".