12876587785 has 8 divisors (see below), whose sum is σ = 15573574656. Its totient is φ = 10220157360.

The previous prime is 12876587777. The next prime is 12876587803. The reversal of 12876587785 is 58778567821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12876587785 - 2³ = 12876587777 is a prime.

It is a super-2 number, since 2×12876587785² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10138411 + ... + 10139680.

It is an arithmetic number, because the mean of its divisors is an integer number (1946696832).

Almost surely, 2^12876587785 is an apocalyptic number.

It is an amenable number.

12876587785 is a deficient number, since it is larger than the sum of its proper divisors (2696986871).

12876587785 is a wasteful number, since it uses less digits than its factorization.

12876587785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20278223.

The product of its digits is 52684800, while the sum is 64.

The spelling of 12876587785 in words is "twelve billion, eight hundred seventy-six million, five hundred eighty-seven thousand, seven hundred eighty-five".