20799676128 has 96 divisors (see below), whose sum is σ = 68071691520. Its totient is φ = 5402511360.

The previous prime is 20799676091. The next prime is 20799676129. The reversal of 20799676128 is 82167699702.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20799676129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1399513 + ... + 1414296.

It is an arithmetic number, because the mean of its divisors is an integer number (709080120).

Almost surely, 2^20799676128 is an apocalyptic number.

20799676128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20799676128 is an abundant number, since it is smaller than the sum of its proper divisors (47272015392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20799676128 is a wasteful number, since it uses less digits than its factorization.

20799676128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813840 (or 2813832 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 57.

The spelling of 20799676128 in words is "twenty billion, seven hundred ninety-nine million, six hundred seventy-six thousand, one hundred twenty-eight".