21757014441 has 12 divisors (see below), whose sum is σ = 31457652720. Its totient is φ = 14490435960.

The previous prime is 21757014421. The next prime is 21757014523. The reversal of 21757014441 is 14441075712.

21757014441 is a `hidden beast` number, since 2 + 1 + 7 + 570 + 1 + 44 + 41 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-21757014441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21757014396 and 21757014405.

It is not an unprimeable number, because it can be changed into a prime (21757014421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1177015 + ... + 1195356.

It is an arithmetic number, because the mean of its divisors is an integer number (2621471060).

Almost surely, 2^21757014441 is an apocalyptic number.

It is an amenable number.

21757014441 is a deficient number, since it is larger than the sum of its proper divisors (9700638279).

21757014441 is a wasteful number, since it uses less digits than its factorization.

21757014441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2373396 (or 2373393 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The spelling of 21757014441 in words is "twenty-one billion, seven hundred fifty-seven million, fourteen thousand, four hundred forty-one".