21365031606104 has 32 divisors (see below), whose sum is σ = 40106826302400. Its totient is φ = 10669880796960.

The previous prime is 21365031606089. The next prime is 21365031606199. The reversal of 21365031606104 is 40160613056312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60880019 + ... + 61229949.

It is an arithmetic number, because the mean of its divisors is an integer number (1253338321950).

Almost surely, 2^{21365031606104} is an apocalyptic number.

It is an amenable number.

21365031606104 is a deficient number, since it is larger than the sum of its proper divisors (18741794696296).

21365031606104 is a wasteful number, since it uses less digits than its factorization.

21365031606104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358943 (or 358939 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 21365031606104 in words is "twenty-one trillion, three hundred sixty-five billion, thirty-one million, six hundred six thousand, one hundred four".