12772380649 has 32 divisors (see below), whose sum is σ = 15706750976. Its totient is φ = 10153978560.

The previous prime is 12772380623. The next prime is 12772380667. The reversal of 12772380649 is 94608327721.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12772380649 - 2⁷ = 12772380521 is a prime.

It is a super-2 number, since 2×12772380649² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12772380749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 526072 + ... + 549814.

It is an arithmetic number, because the mean of its divisors is an integer number (490835968).

Almost surely, 2^12772380649 is an apocalyptic number.

It is an amenable number.

12772380649 is a deficient number, since it is larger than the sum of its proper divisors (2934370327).

12772380649 is a wasteful number, since it uses less digits than its factorization.

12772380649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23885.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 12772380649 in words is "twelve billion, seven hundred seventy-two million, three hundred eighty thousand, six hundred forty-nine".