155131240303555 has 16 divisors (see below), whose sum is σ = 186665463319104. Its totient is φ = 123766373980800.

The previous prime is 155131240303397. The next prime is 155131240303561. The reversal of 155131240303555 is 555303042131551.

It is not a de Polignac number, because 155131240303555 - 2¹¹ = 155131240301507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37382362 + ... + 41324368.

It is an arithmetic number, because the mean of its divisors is an integer number (11666591457444).

Almost surely, 2^{155131240303555} is an apocalyptic number.

155131240303555 is a deficient number, since it is larger than the sum of its proper divisors (31534223015549).

155131240303555 is a wasteful number, since it uses less digits than its factorization.

155131240303555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3963486.

The product of its (nonzero) digits is 675000, while the sum is 43.

The spelling of 155131240303555 in words is "one hundred fifty-five trillion, one hundred thirty-one billion, two hundred forty million, three hundred three thousand, five hundred fifty-five".