123998946724679 has 8 divisors (see below), whose sum is σ = 141392464138800. Its totient is φ = 107727591724416.

The previous prime is 123998946724663. The next prime is 123998946724703. The reversal of 123998946724679 is 976427649899321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 123998946724679 - 2⁴ = 123998946724663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123998946724679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123998946744679) 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, 280540603229 + ... + 280540603670.

It is an arithmetic number, because the mean of its divisors is an integer number (17674058017350).

Almost surely, 2^{123998946724679} is an apocalyptic number.

123998946724679 is a deficient number, since it is larger than the sum of its proper divisors (17393517414121).

123998946724679 is a wasteful number, since it uses less digits than its factorization.

123998946724679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561081206929.

The product of its digits is 17777055744, while the sum is 86.

The spelling of 123998946724679 in words is "one hundred twenty-three trillion, nine hundred ninety-eight billion, nine hundred forty-six million, seven hundred twenty-four thousand, six hundred seventy-nine".