123153774772 has 24 divisors (see below), whose sum is σ = 254252956160. Its totient is φ = 51077602080.

The previous prime is 123153774727. The next prime is 123153774787. The reversal of 123153774772 is 277477351321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70940247 + ... + 70941982.

Almost surely, 2^123153774772 is an apocalyptic number.

It is an amenable number.

123153774772 is an abundant number, since it is smaller than the sum of its proper divisors (131099181388).

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

123153774772 is a wasteful number, since it uses less digits than its factorization.

123153774772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141882271 (or 141882269 counting only the distinct ones).

The product of its digits is 1728720, while the sum is 49.

The spelling of 123153774772 in words is "one hundred twenty-three billion, one hundred fifty-three million, seven hundred seventy-four thousand, seven hundred seventy-two".