12605570772 has 12 divisors (see below), whose sum is σ = 29412998496. Its totient is φ = 4201856920.

The previous prime is 12605570743. The next prime is 12605570797. The reversal of 12605570772 is 27707550621.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525232104 + ... + 525232127.

It is an arithmetic number, because the mean of its divisors is an integer number (2451083208).

Almost surely, 2^12605570772 is an apocalyptic number.

12605570772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12605570772 is an abundant number, since it is smaller than the sum of its proper divisors (16807427724).

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

12605570772 is a wasteful number, since it uses less digits than its factorization.

12605570772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050464238 (or 1050464236 counting only the distinct ones).

The product of its (nonzero) digits is 205800, while the sum is 42.

The spelling of 12605570772 in words is "twelve billion, six hundred five million, five hundred seventy thousand, seven hundred seventy-two".