12218729694 has 16 divisors (see below), whose sum is σ = 24461406480. Its totient is φ = 4068918720.

The previous prime is 12218729689. The next prime is 12218729711. The reversal of 12218729694 is 49692781221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991159 + ... + 1003410.

It is an arithmetic number, because the mean of its divisors is an integer number (1528837905).

Almost surely, 2^12218729694 is an apocalyptic number.

12218729694 is an abundant number, since it is smaller than the sum of its proper divisors (12242676786).

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

12218729694 is a wasteful number, since it uses less digits than its factorization.

12218729694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995595.

The product of its digits is 870912, while the sum is 51.

The spelling of 12218729694 in words is "twelve billion, two hundred eighteen million, seven hundred twenty-nine thousand, six hundred ninety-four".