20996013849136 has 40 divisors (see below), whose sum is σ = 40749486024704. Its totient is φ = 10480032383040.

The previous prime is 20996013849133. The next prime is 20996013849143. The reversal of 20996013849136 is 63194831069902.

It is a super-2 number, since 2×20996013849136² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20996013849133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22097815 + ... + 23028361.

Almost surely, 2^{20996013849136} is an apocalyptic number.

It is an amenable number.

20996013849136 is a deficient number, since it is larger than the sum of its proper divisors (19753472175568).

20996013849136 is a wasteful number, since it uses less digits than its factorization.

20996013849136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932969 (or 932963 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 61.

The spelling of 20996013849136 in words is "twenty trillion, nine hundred ninety-six billion, thirteen million, eight hundred forty-nine thousand, one hundred thirty-six".