18553041568 has 48 divisors (see below), whose sum is σ = 38590957440. Its totient is φ = 8755776000.

The previous prime is 18553041547. The next prime is 18553041589. The reversal of 18553041568 is 86514035581.

It is an interprime number because it is at equal distance from previous prime (18553041547) and next prime (18553041589).

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, 108468 + ... + 221068.

It is an arithmetic number, because the mean of its divisors is an integer number (803978280).

Almost surely, 2^18553041568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18553041568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19295478720).

18553041568 is an abundant number, since it is smaller than the sum of its proper divisors (20037915872).

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

18553041568 is a wasteful number, since it uses less digits than its factorization.

18553041568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112901 (or 112893 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 46.

The spelling of 18553041568 in words is "eighteen billion, five hundred fifty-three million, forty-one thousand, five hundred sixty-eight".