13281399870 has 32 divisors (see below), whose sum is σ = 32324313600. Its totient is φ = 3491822880.

The previous prime is 13281399851. The next prime is 13281399899. The reversal of 13281399870 is 7899318231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3115570 + ... + 3119829.

It is an arithmetic number, because the mean of its divisors is an integer number (1010134800).

Almost surely, 2^13281399870 is an apocalyptic number.

13281399870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13281399870 is an abundant number, since it is smaller than the sum of its proper divisors (19042913730).

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

13281399870 is a wasteful number, since it uses less digits than its factorization.

13281399870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6235480.

The product of its (nonzero) digits is 653184, while the sum is 51.

The spelling of 13281399870 in words is "thirteen billion, two hundred eighty-one million, three hundred ninety-nine thousand, eight hundred seventy".