13651985960 has 16 divisors (see below), whose sum is σ = 30716968500. Its totient is φ = 5460794368.

The previous prime is 13651985957. The next prime is 13651985981. The reversal of 13651985960 is 6958915631.

It can be written as a sum of positive squares in 2 ways, for example, as 13596959236 + 55026724 = 116606^2 + 7418^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170649785 + ... + 170649864.

Almost surely, 2^13651985960 is an apocalyptic number.

13651985960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13651985960 is an abundant number, since it is smaller than the sum of its proper divisors (17064982540).

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

13651985960 is a wasteful number, since it uses less digits than its factorization.

13651985960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341299660 (or 341299656 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 53.

The spelling of 13651985960 in words is "thirteen billion, six hundred fifty-one million, nine hundred eighty-five thousand, nine hundred sixty".