155139002506 has 8 divisors (see below), whose sum is σ = 242826264864. Its totient is φ = 74196914220.

The previous prime is 155139002489. The next prime is 155139002507. The reversal of 155139002506 is 605200931551.

155139002506 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×155139002506² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155139002507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1686293460 + ... + 1686293551.

It is an arithmetic number, because the mean of its divisors is an integer number (30353283108).

Almost surely, 2^155139002506 is an apocalyptic number.

155139002506 is a deficient number, since it is larger than the sum of its proper divisors (87687262358).

155139002506 is a wasteful number, since it uses less digits than its factorization.

155139002506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372587036.

The product of its (nonzero) digits is 40500, while the sum is 37.

The spelling of 155139002506 in words is "one hundred fifty-five billion, one hundred thirty-nine million, two thousand, five hundred six".