12712664762 has 12 divisors (see below), whose sum is σ = 22182302970. Its totient is φ = 5448284856.

The previous prime is 12712664749. The next prime is 12712664771. The reversal of 12712664762 is 26746621721.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12181316161 + 531348601 = 110369^2 + 23051^2 .

It is a super-2 number, since 2×12712664762² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64860437 + ... + 64860632.

Almost surely, 2^12712664762 is an apocalyptic number.

12712664762 is a deficient number, since it is larger than the sum of its proper divisors (9469638208).

12712664762 is a wasteful number, since it uses less digits than its factorization.

12712664762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129721085 (or 129721078 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The spelling of 12712664762 in words is "twelve billion, seven hundred twelve million, six hundred sixty-four thousand, seven hundred sixty-two".