21115269375620 has 48 divisors (see below), whose sum is σ = 51390402110208. Its totient is φ = 7137555841920.

The previous prime is 21115269375619. The next prime is 21115269375643. The reversal of 21115269375620 is 2657396251112.

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, 1062126347 + ... + 1062146226.

It is an arithmetic number, because the mean of its divisors is an integer number (1070633377296).

Almost surely, 2^{21115269375620} is an apocalyptic number.

21115269375620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21115269375620 is an abundant number, since it is smaller than the sum of its proper divisors (30275132734588).

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

21115269375620 is a wasteful number, since it uses less digits than its factorization.

21115269375620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124272660 (or 2124272658 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 21115269375620 in words is "twenty-one trillion, one hundred fifteen billion, two hundred sixty-nine million, three hundred seventy-five thousand, six hundred twenty".