21757611404 has 24 divisors (see below), whose sum is σ = 38141851440. Its totient is φ = 10859961024.

The previous prime is 21757611397. The next prime is 21757611443. The reversal of 21757611404 is 40411675712.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9699107 + ... + 9701349.

It is an arithmetic number, because the mean of its divisors is an integer number (1589243810).

Almost surely, 2^21757611404 is an apocalyptic number.

It is an amenable number.

21757611404 is a deficient number, since it is larger than the sum of its proper divisors (16384240036).

21757611404 is a wasteful number, since it uses less digits than its factorization.

21757611404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5369 (or 5367 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 38.

The spelling of 21757611404 in words is "twenty-one billion, seven hundred fifty-seven million, six hundred eleven thousand, four hundred four".