123774316652661 has 16 divisors (see below), whose sum is σ = 165723812006016. Its totient is φ = 82170758209536.

The previous prime is 123774316652603. The next prime is 123774316652689. The reversal of 123774316652661 is 166256613477321.

It is not a de Polignac number, because 123774316652661 - 2²³ = 123774308264053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123774316652595 and 123774316652604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123774316652461) 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, 28203820 + ... + 32295573.

It is an arithmetic number, because the mean of its divisors is an integer number (10357738250376).

Almost surely, 2^{123774316652661} is an apocalyptic number.

It is an amenable number.

123774316652661 is a deficient number, since it is larger than the sum of its proper divisors (41949495353355).

123774316652661 is a wasteful number, since it uses less digits than its factorization.

123774316652661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60502252.

The product of its digits is 45722880, while the sum is 60.

The spelling of 123774316652661 in words is "one hundred twenty-three trillion, seven hundred seventy-four billion, three hundred sixteen million, six hundred fifty-two thousand, six hundred sixty-one".