155308977089 has 12 divisors (see below), whose sum is σ = 180677242944. Its totient is φ = 133113360744.

The previous prime is 155308977073. The next prime is 155308977097. The reversal of 155308977089 is 980779803551.

It is not a de Polignac number, because 155308977089 - 2⁴ = 155308977073 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155308997089) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 730124 + ... + 918530.

It is an arithmetic number, because the mean of its divisors is an integer number (15056436912).

Almost surely, 2^155308977089 is an apocalyptic number.

It is an amenable number.

155308977089 is a deficient number, since it is larger than the sum of its proper divisors (25368265855).

155308977089 is a wasteful number, since it uses less digits than its factorization.

155308977089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205244 (or 205237 counting only the distinct ones).

The product of its (nonzero) digits is 19051200, while the sum is 62.

The spelling of 155308977089 in words is "one hundred fifty-five billion, three hundred eight million, nine hundred seventy-seven thousand, eighty-nine".