12807707557 has 4 divisors (see below), whose sum is σ = 12908555776. Its totient is φ = 12706859340.

The previous prime is 12807707501. The next prime is 12807707609. The reversal of 12807707557 is 75570770821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12807707557 - 2¹¹ = 12807705509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12807707557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12807707357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50423919 + ... + 50424172.

It is an arithmetic number, because the mean of its divisors is an integer number (3227138944).

Almost surely, 2^12807707557 is an apocalyptic number.

It is an amenable number.

12807707557 is a deficient number, since it is larger than the sum of its proper divisors (100848219).

12807707557 is a wasteful number, since it uses less digits than its factorization.

12807707557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100848218.

The product of its (nonzero) digits is 960400, while the sum is 49.

The spelling of 12807707557 in words is "twelve billion, eight hundred seven million, seven hundred seven thousand, five hundred fifty-seven".