12577743785 has 16 divisors (see below), whose sum is σ = 15891940800. Its totient is φ = 9530047296.

The previous prime is 12577743769. The next prime is 12577743803. The reversal of 12577743785 is 58734777521.

It is a cyclic number.

It is not a de Polignac number, because 12577743785 - 2⁴ = 12577743769 is a prime.

It is a super-2 number, since 2×12577743785² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12577743785.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386102 + ... + 417408.

It is an arithmetic number, because the mean of its divisors is an integer number (993246300).

Almost surely, 2^12577743785 is an apocalyptic number.

It is an amenable number.

12577743785 is a deficient number, since it is larger than the sum of its proper divisors (3314197015).

12577743785 is a wasteful number, since it uses less digits than its factorization.

12577743785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35560.

The product of its digits is 11524800, while the sum is 56.

The spelling of 12577743785 in words is "twelve billion, five hundred seventy-seven million, seven hundred forty-three thousand, seven hundred eighty-five".