107539642391 has 4 divisors (see below), whose sum is σ = 107570015784. Its totient is φ = 107509269000.

The previous prime is 107539642373. The next prime is 107539642417. The reversal of 107539642391 is 193246935701.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-107539642391 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 (107539642361) 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, 15181385 + ... + 15188466.

It is an arithmetic number, because the mean of its divisors is an integer number (26892503946).

Almost surely, 2^107539642391 is an apocalyptic number.

107539642391 is a deficient number, since it is larger than the sum of its proper divisors (30373393).

107539642391 is an equidigital number, since it uses as much as digits as its factorization.

107539642391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30373392.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 107539642391 in words is "one hundred seven billion, five hundred thirty-nine million, six hundred forty-two thousand, three hundred ninety-one".