123704456616543 has 64 divisors (see below), whose sum is σ = 185323184220672. Its totient is φ = 72738641364480.

The previous prime is 123704456616509. The next prime is 123704456616563. The reversal of 123704456616543 is 345616654407321.

It is not a de Polignac number, because 123704456616543 - 2²⁶ = 123704389507679 is a prime.

It is a super-2 number, since 2×123704456616543² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123704456616563) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 605808180 + ... + 606012342.

It is an arithmetic number, because the mean of its divisors is an integer number (2895674753448).

Almost surely, 2^{123704456616543} is an apocalyptic number.

123704456616543 is a deficient number, since it is larger than the sum of its proper divisors (61618727604129).

123704456616543 is a wasteful number, since it uses less digits than its factorization.

123704456616543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205624.

The product of its (nonzero) digits is 43545600, while the sum is 57.

The spelling of 123704456616543 in words is "one hundred twenty-three trillion, seven hundred four billion, four hundred fifty-six million, six hundred sixteen thousand, five hundred forty-three".