155672774148 has 24 divisors (see below), whose sum is σ = 370964909952. Its totient is φ = 50786862304.

The previous prime is 155672774143. The next prime is 155672774189. The reversal of 155672774148 is 841477276551.

It is a super-2 number, since 2×155672774148² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155672774143) 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, 138007215 + ... + 138008342.

It is an arithmetic number, because the mean of its divisors is an integer number (15456871248).

Almost surely, 2^155672774148 is an apocalyptic number.

It is an amenable number.

155672774148 is an abundant number, since it is smaller than the sum of its proper divisors (215292135804).

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

155672774148 is a wasteful number, since it uses less digits than its factorization.

155672774148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276015611 (or 276015609 counting only the distinct ones).

The product of its digits is 13171200, while the sum is 57.

The spelling of 155672774148 in words is "one hundred fifty-five billion, six hundred seventy-two million, seven hundred seventy-four thousand, one hundred forty-eight".