139864651079 has 4 divisors (see below), whose sum is σ = 140216955384. Its totient is φ = 139512346776.

The previous prime is 139864651063. The next prime is 139864651081. The reversal of 139864651079 is 970156468931.

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 139864651079 - 2⁴ = 139864651063 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 (139864651049) 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, 176151557 + ... + 176152350.

It is an arithmetic number, because the mean of its divisors is an integer number (35054238846).

Almost surely, 2^139864651079 is an apocalyptic number.

139864651079 is a deficient number, since it is larger than the sum of its proper divisors (352304305).

139864651079 is an equidigital number, since it uses as much as digits as its factorization.

139864651079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352304304.

The product of its (nonzero) digits is 9797760, while the sum is 59.

The spelling of 139864651079 in words is "one hundred thirty-nine billion, eight hundred sixty-four million, six hundred fifty-one thousand, seventy-nine".