20077696288 has 24 divisors (see below), whose sum is σ = 42568578108. Its totient is φ = 9266628864.

The previous prime is 20077696273. The next prime is 20077696297. The reversal of 20077696288 is 88269677002.

It can be written as a sum of positive squares in 2 ways, for example, as 16788903184 + 3288793104 = 129572^2 + 57348^2 .

It is a super-2 number, since 2×20077696288² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24131431 + ... + 24132262.

Almost surely, 2^20077696288 is an apocalyptic number.

It is an amenable number.

20077696288 is an abundant number, since it is smaller than the sum of its proper divisors (22490881820).

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

20077696288 is a wasteful number, since it uses less digits than its factorization.

20077696288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48263716 (or 48263708 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 20077696288 in words is "twenty billion, seventy-seven million, six hundred ninety-six thousand, two hundred eighty-eight".