12577643693 has 16 divisors (see below), whose sum is σ = 13286088000. Its totient is φ = 11873941632.

The previous prime is 12577643629. The next prime is 12577643699. The reversal of 12577643693 is 39634677521.

It is a cyclic number.

It is not a de Polignac number, because 12577643693 - 2⁶ = 12577643629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12577643699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11139953 + ... + 11141081.

It is an arithmetic number, because the mean of its divisors is an integer number (830380500).

Almost surely, 2^12577643693 is an apocalyptic number.

It is an amenable number.

12577643693 is a deficient number, since it is larger than the sum of its proper divisors (708444307).

12577643693 is a wasteful number, since it uses less digits than its factorization.

12577643693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684.

The product of its digits is 5715360, while the sum is 53.

The spelling of 12577643693 in words is "twelve billion, five hundred seventy-seven million, six hundred forty-three thousand, six hundred ninety-three".