21365633055032 has 64 divisors (see below), whose sum is σ = 45876799569600. Its totient is φ = 9138042501120.

The previous prime is 21365633054989. The next prime is 21365633055047. The reversal of 21365633055032 is 23055033656312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 760843232 + ... + 760871312.

It is an arithmetic number, because the mean of its divisors is an integer number (716824993275).

Almost surely, 2^{21365633055032} is an apocalyptic number.

It is an amenable number.

21365633055032 is an abundant number, since it is smaller than the sum of its proper divisors (24511166514568).

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

21365633055032 is a wasteful number, since it uses less digits than its factorization.

21365633055032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55296 (or 55292 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 44.

The spelling of 21365633055032 in words is "twenty-one trillion, three hundred sixty-five billion, six hundred thirty-three million, fifty-five thousand, thirty-two".