12952778555 has 16 divisors (see below), whose sum is σ = 16222434624. Its totient is φ = 9909672960.

The previous prime is 12952778543. The next prime is 12952778563. The reversal of 12952778555 is 55587725921.

12952778555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12952778555 - 2⁴ = 12952778539 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 12952778555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 811007 + ... + 826823.

It is an arithmetic number, because the mean of its divisors is an integer number (1013902164).

Almost surely, 2^12952778555 is an apocalyptic number.

12952778555 is a deficient number, since it is larger than the sum of its proper divisors (3269656069).

12952778555 is a wasteful number, since it uses less digits than its factorization.

12952778555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22966.

The product of its digits is 8820000, while the sum is 56.

The spelling of 12952778555 in words is "twelve billion, nine hundred fifty-two million, seven hundred seventy-eight thousand, five hundred fifty-five".