155230763187 has 4 divisors (see below), whose sum is σ = 206974350920. Its totient is φ = 103487175456.

The previous prime is 155230763153. The next prime is 155230763213. The reversal of 155230763187 is 781367032551.

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

It is not a de Polignac number, because 155230763187 - 2³¹ = 153083279539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155230363187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25871793862 + ... + 25871793867.

It is an arithmetic number, because the mean of its divisors is an integer number (51743587730).

Almost surely, 2^155230763187 is an apocalyptic number.

155230763187 is a deficient number, since it is larger than the sum of its proper divisors (51743587733).

155230763187 is an equidigital number, since it uses as much as digits as its factorization.

155230763187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51743587732.

The product of its (nonzero) digits is 1058400, while the sum is 48.

The spelling of 155230763187 in words is "one hundred fifty-five billion, two hundred thirty million, seven hundred sixty-three thousand, one hundred eighty-seven".