12605991846 has 64 divisors (see below), whose sum is σ = 31103308800. Its totient is φ = 3326311296.

The previous prime is 12605991779. The next prime is 12605991857. The reversal of 12605991846 is 64819950621.

It is a super-2 number, since 2×12605991846² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196981 + ... + 253008.

It is an arithmetic number, because the mean of its divisors is an integer number (485989200).

Almost surely, 2^12605991846 is an apocalyptic number.

12605991846 is an abundant number, since it is smaller than the sum of its proper divisors (18497316954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12605991846 is a wasteful number, since it uses less digits than its factorization.

12605991846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450053.

The product of its (nonzero) digits is 933120, while the sum is 51.

The spelling of 12605991846 in words is "twelve billion, six hundred five million, nine hundred ninety-one thousand, eight hundred forty-six".