139176379129 has 4 divisors (see below), whose sum is σ = 139186765684. Its totient is φ = 139165992576.

The previous prime is 139176379099. The next prime is 139176379169. The reversal of 139176379129 is 921973671931.

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

It can be written as a sum of positive squares in 2 ways, for example, as 99066303504 + 40110075625 = 314748^2 + 200275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139176379129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139176379169) 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, 5173152 + ... + 5199985.

It is an arithmetic number, because the mean of its divisors is an integer number (34796691421).

Almost surely, 2^139176379129 is an apocalyptic number.

It is an amenable number.

139176379129 is a deficient number, since it is larger than the sum of its proper divisors (10386555).

139176379129 is a wasteful number, since it uses less digits than its factorization.

139176379129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10386554.

The product of its digits is 3857868, while the sum is 58.

The spelling of 139176379129 in words is "one hundred thirty-nine billion, one hundred seventy-six million, three hundred seventy-nine thousand, one hundred twenty-nine".