155875617977 has 8 divisors (see below), whose sum is σ = 156853935360. Its totient is φ = 154899060480.

The previous prime is 155875617959. The next prime is 155875617979. The reversal of 155875617977 is 779716578551.

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 155875617977 - 2²⁶ = 155808509113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155875617979) 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, 262049 + ... + 616782.

It is an arithmetic number, because the mean of its divisors is an integer number (19606741920).

Almost surely, 2^155875617977 is an apocalyptic number.

It is an amenable number.

155875617977 is a deficient number, since it is larger than the sum of its proper divisors (978317383).

155875617977 is an equidigital number, since it uses as much as digits as its factorization.

155875617977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879943.

The product of its digits is 129654000, while the sum is 68.

The spelling of 155875617977 in words is "one hundred fifty-five billion, eight hundred seventy-five million, six hundred seventeen thousand, nine hundred seventy-seven".