123747774891532 has 12 divisors (see below), whose sum is σ = 236245752065736. Its totient is φ = 56248988587040.

The previous prime is 123747774891509. The next prime is 123747774891553. The reversal of 123747774891532 is 235198477747321.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1406224714633 + ... + 1406224714720.

It is an arithmetic number, because the mean of its divisors is an integer number (19687146005478).

Almost surely, 2^{123747774891532} is an apocalyptic number.

It is an amenable number.

123747774891532 is a deficient number, since it is larger than the sum of its proper divisors (112497977174204).

123747774891532 is a wasteful number, since it uses less digits than its factorization.

123747774891532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812449429368 (or 2812449429366 counting only the distinct ones).

The product of its digits is 497871360, while the sum is 70.

The spelling of 123747774891532 in words is "one hundred twenty-three trillion, seven hundred forty-seven billion, seven hundred seventy-four million, eight hundred ninety-one thousand, five hundred thirty-two".