123740625062779 has 8 divisors (see below), whose sum is σ = 125587872706640. Its totient is φ = 121893388379136.

The previous prime is 123740625062731. The next prime is 123740625062797. The reversal of 123740625062779 is 977260526047321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123740625062779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123740625062729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21611887 + ... + 26731159.

It is an arithmetic number, because the mean of its divisors is an integer number (15698484088330).

Almost surely, 2^{123740625062779} is an apocalyptic number.

123740625062779 is a deficient number, since it is larger than the sum of its proper divisors (1847247643861).

123740625062779 is an equidigital number, since it uses as much as digits as its factorization.

123740625062779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5480109.

The product of its (nonzero) digits is 53343360, while the sum is 61.

The spelling of 123740625062779 in words is "one hundred twenty-three trillion, seven hundred forty billion, six hundred twenty-five million, sixty-two thousand, seven hundred seventy-nine".