139694719579 has 4 divisors (see below), whose sum is σ = 139717750984. Its totient is φ = 139671688176.

The previous prime is 139694719573. The next prime is 139694719601. The reversal of 139694719579 is 975917496931.

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 139694719579 - 2⁵ = 139694719547 is a prime.

It is a super-2 number, since 2×139694719579² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139694719573) 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, 11506602 + ... + 11518735.

It is an arithmetic number, because the mean of its divisors is an integer number (34929437746).

Almost surely, 2^139694719579 is an apocalyptic number.

139694719579 is a deficient number, since it is larger than the sum of its proper divisors (23031405).

139694719579 is an equidigital number, since it uses as much as digits as its factorization.

139694719579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23031404.

The product of its digits is 115736040, while the sum is 70.

The spelling of 139694719579 in words is "one hundred thirty-nine billion, six hundred ninety-four million, seven hundred nineteen thousand, five hundred seventy-nine".