155230763185 has 4 divisors (see below), whose sum is σ = 186276915828. Its totient is φ = 124184610544.

The previous prime is 155230763153. The next prime is 155230763213. The reversal of 155230763185 is 581367032551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72682003216 + 82548759969 = 269596^2 + 287313^2 .

It is a cyclic number.

It is not a de Polignac number, because 155230763185 - 2⁵ = 155230763153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15523076314 + ... + 15523076323.

It is an arithmetic number, because the mean of its divisors is an integer number (46569228957).

Almost surely, 2^155230763185 is an apocalyptic number.

It is an amenable number.

155230763185 is a deficient number, since it is larger than the sum of its proper divisors (31046152643).

155230763185 is an equidigital number, since it uses as much as digits as its factorization.

155230763185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31046152642.

The product of its (nonzero) digits is 756000, while the sum is 46.

The spelling of 155230763185 in words is "one hundred fifty-five billion, two hundred thirty million, seven hundred sixty-three thousand, one hundred eighty-five".