155258631399 has 16 divisors (see below), whose sum is σ = 213167438720. Its totient is φ = 100442553120.

The previous prime is 155258631379. The next prime is 155258631403. The reversal of 155258631399 is 993136852551.

It is not a de Polignac number, because 155258631399 - 2²⁷ = 155124413671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155258631379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1803217 + ... + 1887354.

It is an arithmetic number, because the mean of its divisors is an integer number (13322964920).

Almost surely, 2^155258631399 is an apocalyptic number.

155258631399 is a deficient number, since it is larger than the sum of its proper divisors (57908807321).

155258631399 is a wasteful number, since it uses less digits than its factorization.

155258631399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3690990.

The product of its digits is 8748000, while the sum is 57.

The spelling of 155258631399 in words is "one hundred fifty-five billion, two hundred fifty-eight million, six hundred thirty-one thousand, three hundred ninety-nine".