12618357234 has 32 divisors (see below), whose sum is σ = 29621475456. Its totient is φ = 3507805440.

The previous prime is 12618357173. The next prime is 12618357247. The reversal of 12618357234 is 43275381621.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon 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, 4058407 + ... + 4061514.

It is an arithmetic number, because the mean of its divisors is an integer number (925671108).

Almost surely, 2^12618357234 is an apocalyptic number.

12618357234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12618357234 is an abundant number, since it is smaller than the sum of its proper divisors (17003118222).

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

12618357234 is a wasteful number, since it uses less digits than its factorization.

12618357234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8119970.

The product of its digits is 241920, while the sum is 42.

The spelling of 12618357234 in words is "twelve billion, six hundred eighteen million, three hundred fifty-seven thousand, two hundred thirty-four".