12617408642 has 16 divisors (see below), whose sum is σ = 19905253632. Its totient is φ = 5990003760.

The previous prime is 12617408627. The next prime is 12617408663. The reversal of 12617408642 is 24680471621.

It is a self number, because there is not a number n which added to its sum of digits gives 12617408642.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1916588 + ... + 1923159.

It is an arithmetic number, because the mean of its divisors is an integer number (1244078352).

Almost surely, 2^12617408642 is an apocalyptic number.

12617408642 is a deficient number, since it is larger than the sum of its proper divisors (7287844990).

12617408642 is a wasteful number, since it uses less digits than its factorization.

12617408642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3839833.

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 12617408642 in words is "twelve billion, six hundred seventeen million, four hundred eight thousand, six hundred forty-two".