100388720168 has 32 divisors (see below), whose sum is σ = 205442732160. Its totient is φ = 45608532480.

The previous prime is 100388720167. The next prime is 100388720171. The reversal of 100388720168 is 861027883001.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (100388720167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105296 + ... + 460287.

It is an arithmetic number, because the mean of its divisors is an integer number (6420085380).

Almost surely, 2^100388720168 is an apocalyptic number.

It is an amenable number.

100388720168 is an abundant number, since it is smaller than the sum of its proper divisors (105054011992).

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

100388720168 is a wasteful number, since it uses less digits than its factorization.

100388720168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567617 (or 567613 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The spelling of 100388720168 in words is "one hundred billion, three hundred eighty-eight million, seven hundred twenty thousand, one hundred sixty-eight".