100191900100 has 72 divisors (see below), whose sum is σ = 231756694400. Its totient is φ = 37486800000.

The previous prime is 100191900097. The next prime is 100191900101. The reversal of 100191900100 is 1009191001.

It is not an unprimeable number, because it can be changed into a prime (100191900101) 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 23 ways as a sum of consecutive naturals, for example, 183651 + ... + 483850.

Almost surely, 2^100191900100 is an apocalyptic number.

100191900100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100191900100 is an abundant number, since it is smaller than the sum of its proper divisors (131564794300).

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

100191900100 is a wasteful number, since it uses less digits than its factorization.

100191900100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667613 (or 667606 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 22.

The spelling of 100191900100 in words is "one hundred billion, one hundred ninety-one million, nine hundred thousand, one hundred".