101972879587 has 4 divisors (see below), whose sum is σ = 101982121456. Its totient is φ = 101963637720.

The previous prime is 101972879579. The next prime is 101972879609. The reversal of 101972879587 is 785978279101.

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 101972879587 - 2³ = 101972879579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101972879507) 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, 4604364 + ... + 4626457.

It is an arithmetic number, because the mean of its divisors is an integer number (25495530364).

Almost surely, 2^101972879587 is an apocalyptic number.

101972879587 is a deficient number, since it is larger than the sum of its proper divisors (9241869).

101972879587 is an equidigital number, since it uses as much as digits as its factorization.

101972879587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9241868.

The product of its (nonzero) digits is 17781120, while the sum is 64.

The spelling of 101972879587 in words is "one hundred one billion, nine hundred seventy-two million, eight hundred seventy-nine thousand, five hundred eighty-seven".