101720885904 has 120 divisors (see below), whose sum is σ = 310634618112. Its totient is φ = 30816802560.

The previous prime is 101720885881. The next prime is 101720885909. The reversal of 101720885904 is 409588027101.

It is a self number, because there is not a number n which added to its sum of digits gives 101720885904.

It is not an unprimeable number, because it can be changed into a prime (101720885909) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 11902657 + ... + 11911199.

Almost surely, 2^101720885904 is an apocalyptic number.

It is an amenable number.

101720885904 is an abundant number, since it is smaller than the sum of its proper divisors (208913732208).

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

101720885904 is a wasteful number, since it uses less digits than its factorization.

101720885904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16085 (or 16076 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 101720885904 in words is "one hundred one billion, seven hundred twenty million, eight hundred eighty-five thousand, nine hundred four".