139052504155 has 4 divisors (see below), whose sum is σ = 166863004992. Its totient is φ = 111242003320.

The previous prime is 139052504147. The next prime is 139052504221. The reversal of 139052504155 is 551405250931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551405250931 = 128159 ⋅4302509.

It is not a de Polignac number, because 139052504155 - 2³ = 139052504147 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13905250411 + ... + 13905250420.

It is an arithmetic number, because the mean of its divisors is an integer number (41715751248).

Almost surely, 2^139052504155 is an apocalyptic number.

139052504155 is a deficient number, since it is larger than the sum of its proper divisors (27810500837).

139052504155 is an equidigital number, since it uses as much as digits as its factorization.

139052504155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27810500836.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 139052504155 in words is "one hundred thirty-nine billion, fifty-two million, five hundred four thousand, one hundred fifty-five".