21337696432 has 40 divisors (see below), whose sum is σ = 44770728240. Its totient is φ = 9793132800.

The previous prime is 21337696423. The next prime is 21337696441. The reversal of 21337696432 is 23469673312.

It is an interprime number because it is at equal distance from previous prime (21337696423) and next prime (21337696441).

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 249319 + ... + 323782.

It is an arithmetic number, because the mean of its divisors is an integer number (1119268206).

Almost surely, 2^21337696432 is an apocalyptic number.

It is an amenable number.

21337696432 is an abundant number, since it is smaller than the sum of its proper divisors (23433031808).

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

21337696432 is a wasteful number, since it uses less digits than its factorization.

21337696432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573301 (or 573295 counting only the distinct ones).

The product of its digits is 979776, while the sum is 46.

The spelling of 21337696432 in words is "twenty-one billion, three hundred thirty-seven million, six hundred ninety-six thousand, four hundred thirty-two".