20899472651876 has 96 divisors (see below), whose sum is σ = 47712488769792. Its totient is φ = 7773355560960.

The previous prime is 20899472651857. The next prime is 20899472651899. The reversal of 20899472651876 is 67815627499802.

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 31 ways as a sum of consecutive naturals, for example, 4076816 + ... + 7643256.

It is an arithmetic number, because the mean of its divisors is an integer number (497005091352).

Almost surely, 2^{20899472651876} is an apocalyptic number.

20899472651876 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20899472651876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23856244384896).

20899472651876 is an abundant number, since it is smaller than the sum of its proper divisors (26813016117916).

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

20899472651876 is a wasteful number, since it uses less digits than its factorization.

20899472651876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3567429 (or 3567427 counting only the distinct ones).

The product of its (nonzero) digits is 731566080, while the sum is 74.

The spelling of 20899472651876 in words is "twenty trillion, eight hundred ninety-nine billion, four hundred seventy-two million, six hundred fifty-one thousand, eight hundred seventy-six".