21757466475712 has 56 divisors (see below), whose sum is σ = 47222947049472. Its totient is φ = 9863935545600.

The previous prime is 21757466475593. The next prime is 21757466475793.

21757466475712 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40076964 + ... + 40616227.

Almost surely, 2^{21757466475712} is an apocalyptic number.

21757466475712 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21757466475712 is an abundant number, since it is smaller than the sum of its proper divisors (25465480573760).

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

21757466475712 is a wasteful number, since it uses less digits than its factorization.

21757466475712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80693597 (or 80693587 counting only the distinct ones).

The product of its digits is 138297600, while the sum is 64.

The spelling of 21757466475712 in words is "twenty-one trillion, seven hundred fifty-seven billion, four hundred sixty-six million, four hundred seventy-five thousand, seven hundred twelve".