123461619599 has 16 divisors (see below), whose sum is σ = 126631584768. Its totient is φ = 120339136512.

The previous prime is 123461619571. The next prime is 123461619607. The reversal of 123461619599 is 995916164321.

It is not a de Polignac number, because 123461619599 - 2²⁰ = 123460571023 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123461619509) 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, 2356739 + ... + 2408555.

It is an arithmetic number, because the mean of its divisors is an integer number (7914474048).

Almost surely, 2^123461619599 is an apocalyptic number.

123461619599 is a deficient number, since it is larger than the sum of its proper divisors (3169965169).

123461619599 is a wasteful number, since it uses less digits than its factorization.

123461619599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52274.

The product of its digits is 3149280, while the sum is 56.

The spelling of 123461619599 in words is "one hundred twenty-three billion, four hundred sixty-one million, six hundred nineteen thousand, five hundred ninety-nine".