12973780736 has 144 divisors (see below), whose sum is σ = 31207464960. Its totient is φ = 5265285120.

The previous prime is 12973780727. The next prime is 12973780739. The reversal of 12973780736 is 63708737921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12973780739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2608460 + ... + 2613428.

Almost surely, 2^12973780736 is an apocalyptic number.

12973780736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12973780736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15603732480).

12973780736 is an abundant number, since it is smaller than the sum of its proper divisors (18233684224).

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

12973780736 is an equidigital number, since it uses as much as digits as its factorization.

12973780736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5070 (or 5056 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 53.

The spelling of 12973780736 in words is "twelve billion, nine hundred seventy-three million, seven hundred eighty thousand, seven hundred thirty-six".