123557542473 has 16 divisors (see below), whose sum is σ = 166361195520. Its totient is φ = 81562969104.

The previous prime is 123557542453. The next prime is 123557542481. The reversal of 123557542473 is 374245755321.

It is not a de Polignac number, because 123557542473 - 2²⁸ = 123289107017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123557542453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3921898 + ... + 3953276.

It is an arithmetic number, because the mean of its divisors is an integer number (10397574720).

Almost surely, 2^123557542473 is an apocalyptic number.

It is an amenable number.

123557542473 is a deficient number, since it is larger than the sum of its proper divisors (42803653047).

123557542473 is a wasteful number, since it uses less digits than its factorization.

123557542473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44228.

The product of its digits is 3528000, while the sum is 48.

The spelling of 123557542473 in words is "one hundred twenty-three billion, five hundred fifty-seven million, five hundred forty-two thousand, four hundred seventy-three".