12855602815 has 16 divisors (see below), whose sum is σ = 17372030976. Its totient is φ = 9047930400.

The previous prime is 12855602743. The next prime is 12855602833. The reversal of 12855602815 is 51820655821.

It is not a de Polignac number, because 12855602815 - 2²³ = 12847214207 is a prime.

It is a super-3 number, since 3×12855602815³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

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, 3768267 + ... + 3771676.

It is an arithmetic number, because the mean of its divisors is an integer number (1085751936).

Almost surely, 2^12855602815 is an apocalyptic number.

12855602815 is a deficient number, since it is larger than the sum of its proper divisors (4516428161).

12855602815 is a wasteful number, since it uses less digits than its factorization.

12855602815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7539990.

The product of its (nonzero) digits is 192000, while the sum is 43.

The spelling of 12855602815 in words is "twelve billion, eight hundred fifty-five million, six hundred two thousand, eight hundred fifteen".