12351522918 has 16 divisors (see below), whose sum is σ = 28232052480. Its totient is φ = 3529006536.

The previous prime is 12351522899. The next prime is 12351522919. The reversal of 12351522918 is 81922515321.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12351522919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147041898 + ... + 147041981.

It is an arithmetic number, because the mean of its divisors is an integer number (1764503280).

Almost surely, 2^12351522918 is an apocalyptic number.

12351522918 is an abundant number, since it is smaller than the sum of its proper divisors (15880529562).

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

12351522918 is a wasteful number, since it uses less digits than its factorization.

12351522918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294083891.

The product of its digits is 43200, while the sum is 39.

The spelling of 12351522918 in words is "twelve billion, three hundred fifty-one million, five hundred twenty-two thousand, nine hundred eighteen".