155216120670 has 64 divisors (see below), whose sum is σ = 445748869440. Its totient is φ = 38207044224.

The previous prime is 155216120651. The next prime is 155216120687. The reversal of 155216120670 is 76021612551.

155216120670 is a `hidden beast` number, since 1 + 5 + 521 + 6 + 120 + 6 + 7 + 0 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 22107049 + ... + 22114068.

It is an arithmetic number, because the mean of its divisors is an integer number (6964826085).

Almost surely, 2^155216120670 is an apocalyptic number.

155216120670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155216120670 is an abundant number, since it is smaller than the sum of its proper divisors (290532748770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155216120670 is a wasteful number, since it uses less digits than its factorization.

155216120670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44221146 (or 44221140 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The spelling of 155216120670 in words is "one hundred fifty-five billion, two hundred sixteen million, one hundred twenty thousand, six hundred seventy".