20881615796 has 12 divisors (see below), whose sum is σ = 37392661152. Its totient is φ = 10197998328.

The previous prime is 20881615789. The next prime is 20881615871. The reversal of 20881615796 is 69751618802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60702200 + ... + 60702543.

It is an arithmetic number, because the mean of its divisors is an integer number (3116055096).

Almost surely, 2^20881615796 is an apocalyptic number.

It is an amenable number.

20881615796 is a deficient number, since it is larger than the sum of its proper divisors (16511045356).

20881615796 is a wasteful number, since it uses less digits than its factorization.

20881615796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121404790 (or 121404788 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 20881615796 in words is "twenty billion, eight hundred eighty-one million, six hundred fifteen thousand, seven hundred ninety-six".