21177633004 has 24 divisors (see below), whose sum is σ = 40434105600. Its totient is φ = 9625225680.

The previous prime is 21177632951. The next prime is 21177633011. The reversal of 21177633004 is 40033677112.

It is a super-2 number, since 2×21177633004² (a number of 21 digits) contains 22 as substring.

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, 593337 + ... + 628015.

It is an arithmetic number, because the mean of its divisors is an integer number (1684754400).

Almost surely, 2^21177633004 is an apocalyptic number.

It is an amenable number.

21177633004 is a deficient number, since it is larger than the sum of its proper divisors (19256472596).

21177633004 is a wasteful number, since it uses less digits than its factorization.

21177633004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48573 (or 48571 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 34.

The spelling of 21177633004 in words is "twenty-one billion, one hundred seventy-seven million, six hundred thirty-three thousand, four".