12801945488 has 10 divisors (see below), whose sum is σ = 24803769414. Its totient is φ = 6400972736.

The previous prime is 12801945479. The next prime is 12801945491. The reversal of 12801945488 is 88454910821.

It can be written as a sum of positive squares in only one way, i.e., 12784372624 + 17572864 = 113068^2 + 4192^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400060781 + ... + 400060812.

Almost surely, 2^12801945488 is an apocalyptic number.

It is an amenable number.

12801945488 is a deficient number, since it is larger than the sum of its proper divisors (12001823926).

12801945488 is an equidigital number, since it uses as much as digits as its factorization.

12801945488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800121601 (or 800121595 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 50.

The spelling of 12801945488 in words is "twelve billion, eight hundred one million, nine hundred forty-five thousand, four hundred eighty-eight".