155913798239 has 8 divisors (see below), whose sum is σ = 171255431040. Its totient is φ = 141285729816.

The previous prime is 155913798221. The next prime is 155913798269. The reversal of 155913798239 is 932897319551.

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

It is a cyclic number.

It is not a de Polignac number, because 155913798239 - 2²⁴ = 155897021023 is a prime.

It is a super-2 number, since 2×155913798239² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155913798269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178390637 + ... + 178391510.

It is an arithmetic number, because the mean of its divisors is an integer number (21406928880).

Almost surely, 2^155913798239 is an apocalyptic number.

155913798239 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

155913798239 is a deficient number, since it is larger than the sum of its proper divisors (15341632801).

155913798239 is a wasteful number, since it uses less digits than its factorization.

155913798239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356782189.

The product of its digits is 18370800, while the sum is 62.

The spelling of 155913798239 in words is "one hundred fifty-five billion, nine hundred thirteen million, seven hundred ninety-eight thousand, two hundred thirty-nine".