129139139015 has 8 divisors (see below), whose sum is σ = 155405968848. Its totient is φ = 103018643200.

The previous prime is 129139138981. The next prime is 129139139027. The reversal of 129139139015 is 510931931921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129139139015 - 2⁶ = 129139138951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36581561 + ... + 36585090.

It is an arithmetic number, because the mean of its divisors is an integer number (19425746106).

Almost surely, 2^129139139015 is an apocalyptic number.

129139139015 is a deficient number, since it is larger than the sum of its proper divisors (26266829833).

129139139015 is an equidigital number, since it uses as much as digits as its factorization.

129139139015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73167009.

The product of its (nonzero) digits is 65610, while the sum is 44.

The spelling of 129139139015 in words is "one hundred twenty-nine billion, one hundred thirty-nine million, one hundred thirty-nine thousand, fifteen".