12918313512 has 96 divisors (see below), whose sum is σ = 39073987680. Its totient is φ = 3974857920.

The previous prime is 12918313487. The next prime is 12918313543. The reversal of 12918313512 is 21531381921.

12918313512 is a `hidden beast` number, since 1 + 291 + 8 + 313 + 51 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 230314 + ... + 280857.

It is an arithmetic number, because the mean of its divisors is an integer number (407020705).

Almost surely, 2^12918313512 is an apocalyptic number.

12918313512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12918313512 is an abundant number, since it is smaller than the sum of its proper divisors (26155674168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12918313512 is a wasteful number, since it uses less digits than its factorization.

12918313512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511205 (or 511189 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The spelling of 12918313512 in words is "twelve billion, nine hundred eighteen million, three hundred thirteen thousand, five hundred twelve".