12887772513 has 32 divisors (see below), whose sum is σ = 21492836352. Its totient is φ = 6673382400.

The previous prime is 12887772493. The next prime is 12887772529. The reversal of 12887772513 is 31527778821.

It is a happy number.

It is not a de Polignac number, because 12887772513 - 2⁶ = 12887772449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12887774513) 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, 17856 + ... + 161537.

It is an arithmetic number, because the mean of its divisors is an integer number (671651136).

Almost surely, 2^12887772513 is an apocalyptic number.

It is an amenable number.

12887772513 is a deficient number, since it is larger than the sum of its proper divisors (8605063839).

12887772513 is a wasteful number, since it uses less digits than its factorization.

12887772513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179725.

The product of its digits is 1317120, while the sum is 51.

The spelling of 12887772513 in words is "twelve billion, eight hundred eighty-seven million, seven hundred seventy-two thousand, five hundred thirteen".