20638062992 has 40 divisors (see below), whose sum is σ = 40568236800. Its totient is φ = 10169736192.

The previous prime is 20638062989. The next prime is 20638063049. The reversal of 20638062992 is 29926083602.

It is a happy number.

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, 343109 + ... + 398747.

It is an arithmetic number, because the mean of its divisors is an integer number (1014205920).

Almost surely, 2^20638062992 is an apocalyptic number.

It is an amenable number.

20638062992 is a deficient number, since it is larger than the sum of its proper divisors (19930173808).

20638062992 is a wasteful number, since it uses less digits than its factorization.

20638062992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55983 (or 55977 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 20638062992 in words is "twenty billion, six hundred thirty-eight million, sixty-two thousand, nine hundred ninety-two".