20177607996 has 72 divisors (see below), whose sum is σ = 62774790624. Its totient is φ = 5321566080.

The previous prime is 20177607959. The next prime is 20177608027. The reversal of 20177607996 is 69970677102.

It is a happy number.

20177607996 is a `hidden beast` number, since 20 + 1 + 7 + 7 + 607 + 9 + 9 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3076335 + ... + 3082886.

It is an arithmetic number, because the mean of its divisors is an integer number (871872092).

Almost surely, 2^20177607996 is an apocalyptic number.

20177607996 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20177607996 is an abundant number, since it is smaller than the sum of its proper divisors (42597182628).

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

20177607996 is a wasteful number, since it uses less digits than its factorization.

20177607996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6159251 (or 6159246 counting only the distinct ones).

The product of its (nonzero) digits is 2000376, while the sum is 54.

The spelling of 20177607996 in words is "twenty billion, one hundred seventy-seven million, six hundred seven thousand, nine hundred ninety-six".