20011199976 has 24 divisors (see below), whose sum is σ = 54197000130. Its totient is φ = 6670399968.

The previous prime is 20011199963. The next prime is 20011199981. The reversal of 20011199976 is 67999111002.

It can be written as a sum of positive squares in only one way, i.e., 18870516900 + 1140683076 = 137370^2 + 33774^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138966595 + ... + 138966738.

Almost surely, 2^20011199976 is an apocalyptic number.

It is an amenable number.

20011199976 is an abundant number, since it is smaller than the sum of its proper divisors (34185800154).

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

20011199976 is a wasteful number, since it uses less digits than its factorization.

20011199976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277933345 (or 277933338 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 45.

The spelling of 20011199976 in words is "twenty billion, eleven million, one hundred ninety-nine thousand, nine hundred seventy-six".