12901678544 has 10 divisors (see below), whose sum is σ = 24997002210. Its totient is φ = 6450839264.

The previous prime is 12901678529. The next prime is 12901678561. The reversal of 12901678544 is 44587610921.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12703994944 + 197683600 = 112712^2 + 14060^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403177439 + ... + 403177470.

It is an arithmetic number, because the mean of its divisors is an integer number (2499700221).

Almost surely, 2^12901678544 is an apocalyptic number.

It is an amenable number.

12901678544 is a deficient number, since it is larger than the sum of its proper divisors (12095323666).

12901678544 is an equidigital number, since it uses as much as digits as its factorization.

12901678544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806354917 (or 806354911 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 12901678544 in words is "twelve billion, nine hundred one million, six hundred seventy-eight thousand, five hundred forty-four".