13147985670 has 64 divisors (see below), whose sum is σ = 32627625984. Its totient is φ = 3387346560.

The previous prime is 13147985633. The next prime is 13147985713. The reversal of 13147985670 is 7658974131.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 558559 + ... + 581621.

It is an arithmetic number, because the mean of its divisors is an integer number (509806656).

Almost surely, 2^13147985670 is an apocalyptic number.

13147985670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13147985670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16313812992).

13147985670 is an abundant number, since it is smaller than the sum of its proper divisors (19479640314).

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

13147985670 is a wasteful number, since it uses less digits than its factorization.

13147985670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23717.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 13147985670 in words is "thirteen billion, one hundred forty-seven million, nine hundred eighty-five thousand, six hundred seventy".