12818240955 has 64 divisors (see below), whose sum is σ = 24886794240. Its totient is φ = 6221577600.

The previous prime is 12818240909. The next prime is 12818240971. The reversal of 12818240955 is 55904281821.

12818240955 is a `hidden beast` number, since 12 + 8 + 182 + 409 + 55 = 666.

It is not a de Polignac number, because 12818240955 - 2¹² = 12818236859 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12818240955.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 73170 + ... + 176040.

It is an arithmetic number, because the mean of its divisors is an integer number (388856160).

Almost surely, 2^12818240955 is an apocalyptic number.

12818240955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12818240955 is a deficient number, since it is larger than the sum of its proper divisors (12068553285).

12818240955 is a wasteful number, since it uses less digits than its factorization.

12818240955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102969 (or 102963 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The spelling of 12818240955 in words is "twelve billion, eight hundred eighteen million, two hundred forty thousand, nine hundred fifty-five".