21367515432 has 32 divisors (see below), whose sum is σ = 53427826080. Its totient is φ = 7121300160.

The previous prime is 21367515419. The next prime is 21367515439. The reversal of 21367515432 is 23451576312.

It is not an unprimeable number, because it can be changed into a prime (21367515439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75682 + ... + 220142.

It is an arithmetic number, because the mean of its divisors is an integer number (1669619565).

Almost surely, 2^21367515432 is an apocalyptic number.

It is an amenable number.

21367515432 is an abundant number, since it is smaller than the sum of its proper divisors (32060310648).

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

21367515432 is a wasteful number, since it uses less digits than its factorization.

21367515432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150633 (or 150629 counting only the distinct ones).

The product of its digits is 151200, while the sum is 39.

The spelling of 21367515432 in words is "twenty-one billion, three hundred sixty-seven million, five hundred fifteen thousand, four hundred thirty-two".