20100647672 has 64 divisors (see below), whose sum is σ = 43677066240. Its totient is φ = 8494560000.

The previous prime is 20100647579. The next prime is 20100647683. The reversal of 20100647672 is 27674600102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1149797 + ... + 1167147.

It is an arithmetic number, because the mean of its divisors is an integer number (682454160).

Almost surely, 2^20100647672 is an apocalyptic number.

It is an amenable number.

20100647672 is an abundant number, since it is smaller than the sum of its proper divisors (23576418568).

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

20100647672 is a wasteful number, since it uses less digits than its factorization.

20100647672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17652 (or 17648 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The spelling of 20100647672 in words is "twenty billion, one hundred million, six hundred forty-seven thousand, six hundred seventy-two".