21365507074502 has 8 divisors (see below), whose sum is σ = 32048434745712. Its totient is φ = 10682695492600.

The previous prime is 21365507074487. The next prime is 21365507074553. The reversal of 21365507074502 is 20547070556312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28560749 + ... + 29299272.

It is an arithmetic number, because the mean of its divisors is an integer number (4006054343214).

Almost surely, 2^{21365507074502} is an apocalyptic number.

21365507074502 is a deficient number, since it is larger than the sum of its proper divisors (10682927671210).

21365507074502 is a wasteful number, since it uses less digits than its factorization.

21365507074502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58044654.

The product of its (nonzero) digits is 1764000, while the sum is 47.

The spelling of 21365507074502 in words is "twenty-one trillion, three hundred sixty-five billion, five hundred seven million, seventy-four thousand, five hundred two".