21140323032 has 16 divisors (see below), whose sum is σ = 52850807640. Its totient is φ = 7046774336.

The previous prime is 21140323031. The next prime is 21140323037. The reversal of 21140323032 is 23032304112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21140323031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440423373 + ... + 440423420.

Almost surely, 2^21140323032 is an apocalyptic number.

It is an amenable number.

21140323032 is an abundant number, since it is smaller than the sum of its proper divisors (31710484608).

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

21140323032 is a wasteful number, since it uses less digits than its factorization.

21140323032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880846802 (or 880846798 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21140323032 its reverse (23032304112), we get a palindrome (44172627144).

The spelling of 21140323032 in words is "twenty-one billion, one hundred forty million, three hundred twenty-three thousand, thirty-two".