12511261612772 has 12 divisors (see below), whose sum is σ = 23578916116476. Its totient is φ = 5774428436640.

The previous prime is 12511261612697. The next prime is 12511261612781. The reversal of 12511261612772 is 27721616211521.

It can be written as a sum of positive squares in 2 ways, for example, as 8509437404836 + 4001824207936 = 2917094^2 + 2000456^2 .

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, 120300592379 + ... + 120300592482.

It is an arithmetic number, because the mean of its divisors is an integer number (1964909676373).

Almost surely, 2^{12511261612772} is an apocalyptic number.

It is an amenable number.

12511261612772 is a deficient number, since it is larger than the sum of its proper divisors (11067654503704).

12511261612772 is a wasteful number, since it uses less digits than its factorization.

12511261612772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240601184878 (or 240601184876 counting only the distinct ones).

The product of its digits is 141120, while the sum is 44.

The spelling of 12511261612772 in words is "twelve trillion, five hundred eleven billion, two hundred sixty-one million, six hundred twelve thousand, seven hundred seventy-two".