13648947642 has 96 divisors (see below), whose sum is σ = 33672614976. Its totient is φ = 3958905600.

The previous prime is 13648947617. The next prime is 13648947659. The reversal of 13648947642 is 24674984631.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 414393 + ... + 446115.

It is an arithmetic number, because the mean of its divisors is an integer number (350756406).

Almost surely, 2^13648947642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13648947642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16836307488).

13648947642 is an abundant number, since it is smaller than the sum of its proper divisors (20023667334).

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

13648947642 is a wasteful number, since it uses less digits than its factorization.

13648947642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31836 (or 31833 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The spelling of 13648947642 in words is "thirteen billion, six hundred forty-eight million, nine hundred forty-seven thousand, six hundred forty-two".