21635112719072 has 24 divisors (see below), whose sum is σ = 42695784822600. Its totient is φ = 10791738795904.

The previous prime is 21635112719063. The next prime is 21635112719107. The reversal of 21635112719072 is 27091721153612.

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, 806785247 + ... + 806812062.

It is an arithmetic number, because the mean of its divisors is an integer number (1778991034275).

Almost surely, 2^{21635112719072} is an apocalyptic number.

It is an amenable number.

21635112719072 is a deficient number, since it is larger than the sum of its proper divisors (21060672103528).

21635112719072 is a wasteful number, since it uses less digits than its factorization.

21635112719072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613597738 (or 1613597730 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 47.

The spelling of 21635112719072 in words is "twenty-one trillion, six hundred thirty-five billion, one hundred twelve million, seven hundred nineteen thousand, seventy-two".