12617747123 has 16 divisors (see below), whose sum is σ = 14131838016. Its totient is φ = 11203568640.

The previous prime is 12617747063. The next prime is 12617747137. The reversal of 12617747123 is 32174771621.

It is a happy number.

It is not a de Polignac number, because 12617747123 - 2⁶ = 12617747059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12617747143) 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, 192488 + ... + 249573.

It is an arithmetic number, because the mean of its divisors is an integer number (883239876).

Almost surely, 2^12617747123 is an apocalyptic number.

12617747123 is a deficient number, since it is larger than the sum of its proper divisors (1514090893).

12617747123 is a wasteful number, since it uses less digits than its factorization.

12617747123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442174.

The product of its digits is 98784, while the sum is 41.

The spelling of 12617747123 in words is "twelve billion, six hundred seventeen million, seven hundred forty-seven thousand, one hundred twenty-three".