155691486155 has 48 divisors (see below), whose sum is σ = 215515448064. Its totient is φ = 107473582080.

The previous prime is 155691486133. The next prime is 155691486221. The reversal of 155691486155 is 551684196551.

It is not a de Polignac number, because 155691486155 - 2⁸ = 155691485899 is a prime.

It is a super-2 number, since 2×155691486155² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155691486155.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 869399 + ... + 1033071.

It is an arithmetic number, because the mean of its divisors is an integer number (4489905168).

Almost surely, 2^155691486155 is an apocalyptic number.

155691486155 is a deficient number, since it is larger than the sum of its proper divisors (59823961909).

155691486155 is a wasteful number, since it uses less digits than its factorization.

155691486155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163764 (or 163745 counting only the distinct ones).

The product of its digits is 6480000, while the sum is 56.

The spelling of 155691486155 in words is "one hundred fifty-five billion, six hundred ninety-one million, four hundred eighty-six thousand, one hundred fifty-five".