15139420079 has 4 divisors (see below), whose sum is σ = 17302194384. Its totient is φ = 12976645776.

The previous prime is 15139420061. The next prime is 15139420103. The reversal of 15139420079 is 97002493151.

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 15139420079 - 2¹⁶ = 15139354543 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 (15139420379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1081387142 + ... + 1081387155.

It is an arithmetic number, because the mean of its divisors is an integer number (4325548596).

Almost surely, 2^15139420079 is an apocalyptic number.

15139420079 is a deficient number, since it is larger than the sum of its proper divisors (2162774305).

15139420079 is an equidigital number, since it uses as much as digits as its factorization.

15139420079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162774304.

The product of its (nonzero) digits is 68040, while the sum is 41.

The spelling of 15139420079 in words is "fifteen billion, one hundred thirty-nine million, four hundred twenty thousand, seventy-nine".