20638500099016 has 32 divisors (see below), whose sum is σ = 39356942191200. Its totient is φ = 10143349914880.

The previous prime is 20638500098999. The next prime is 20638500099029. The reversal of 20638500099016 is 61099000583602.

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, 2666211 + ... + 6955981.

It is an arithmetic number, because the mean of its divisors is an integer number (1229904443475).

Almost surely, 2^{20638500099016} is an apocalyptic number.

It is an amenable number.

20638500099016 is a deficient number, since it is larger than the sum of its proper divisors (18718442092184).

20638500099016 is a wasteful number, since it uses less digits than its factorization.

20638500099016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4300029 (or 4300025 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 20638500099016 in words is "twenty trillion, six hundred thirty-eight billion, five hundred million, ninety-nine thousand, sixteen".