100972884391 has 4 divisors (see below), whose sum is σ = 100976174352. Its totient is φ = 100969594432.

The previous prime is 100972884373. The next prime is 100972884503. The reversal of 100972884391 is 193488279001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100972884391 - 2¹⁷ = 100972753319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100972884091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1598506 + ... + 1660471.

It is an arithmetic number, because the mean of its divisors is an integer number (25244043588).

Almost surely, 2^100972884391 is an apocalyptic number.

100972884391 is a deficient number, since it is larger than the sum of its proper divisors (3289961).

100972884391 is an equidigital number, since it uses as much as digits as its factorization.

100972884391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3289960.

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 100972884391 in words is "one hundred billion, nine hundred seventy-two million, eight hundred eighty-four thousand, three hundred ninety-one".