12945969842 has 64 divisors (see below), whose sum is σ = 22426225920. Its totient is φ = 5557939200.

The previous prime is 12945969823. The next prime is 12945969847. The reversal of 12945969842 is 24896954921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12945969847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10027217 + ... + 10028507.

It is an arithmetic number, because the mean of its divisors is an integer number (350409780).

Almost surely, 2^12945969842 is an apocalyptic number.

12945969842 is a deficient number, since it is larger than the sum of its proper divisors (9480256078).

12945969842 is a wasteful number, since it uses less digits than its factorization.

12945969842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779.

The product of its digits is 11197440, while the sum is 59.

The spelling of 12945969842 in words is "twelve billion, nine hundred forty-five million, nine hundred sixty-nine thousand, eight hundred forty-two".