21757376264736 has 96 divisors (see below), whose sum is σ = 65662980203520. Its totient is φ = 6179169275136.

The previous prime is 21757376264717. The next prime is 21757376264777. The reversal of 21757376264736 is 63746267375712.

It is a tau number, because it is divible by the number of its divisors (96).

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, 96825046 + ... + 97049493.

It is an arithmetic number, because the mean of its divisors is an integer number (683989377120).

Almost surely, 2^{21757376264736} is an apocalyptic number.

It is an amenable number.

21757376264736 is an abundant number, since it is smaller than the sum of its proper divisors (43905603938784).

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

21757376264736 is a wasteful number, since it uses less digits than its factorization.

21757376264736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193874726 (or 193874718 counting only the distinct ones).

The product of its digits is 373403520, while the sum is 66.

The spelling of 21757376264736 in words is "twenty-one trillion, seven hundred fifty-seven billion, three hundred seventy-six million, two hundred sixty-four thousand, seven hundred thirty-six".