18613320141648 has 40 divisors (see below), whose sum is σ = 48086357572768. Its totient is φ = 6204188794752.

The previous prime is 18613320141613. The next prime is 18613320141679. The reversal of 18613320141648 is 84614102331681.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 18613320141597 and 18613320141606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6652090 + ... + 9026457.

Almost surely, 2^{18613320141648} is an apocalyptic number.

It is an amenable number.

18613320141648 is an abundant number, since it is smaller than the sum of its proper divisors (29473037431120).

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

18613320141648 is a wasteful number, since it uses less digits than its factorization.

18613320141648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15703291 (or 15703285 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The spelling of 18613320141648 in words is "eighteen trillion, six hundred thirteen billion, three hundred twenty million, one hundred forty-one thousand, six hundred forty-eight".