21763657004 has 36 divisors (see below), whose sum is σ = 39126089184. Its totient is φ = 10587870048.

The previous prime is 21763657001. The next prime is 21763657031. The reversal of 21763657004 is 40075636712.

It is not an unprimeable number, because it can be changed into a prime (21763657001) 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, 6021902 + ... + 6025514.

Almost surely, 2^21763657004 is an apocalyptic number.

It is an amenable number.

21763657004 is a deficient number, since it is larger than the sum of its proper divisors (17362432180).

21763657004 is a wasteful number, since it uses less digits than its factorization.

21763657004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022 (or 3841 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 41.

The spelling of 21763657004 in words is "twenty-one billion, seven hundred sixty-three million, six hundred fifty-seven thousand, four".