18258492994560 has 3520 divisors, whose sum is σ = 86285432217600. Its totient is φ = 3582543790080.

The previous prime is 18258492994559. The next prime is 18258492994571. The reversal of 18258492994560 is 6549929485281.

18258492994560 is a `hidden beast` number, since 1 + 8 + 2 + 5 + 8 + 492 + 99 + 45 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 95594204065 + ... + 95594204255.

It is an arithmetic number, because the mean of its divisors is an integer number (24512906880).

Almost surely, 2^{18258492994560} is an apocalyptic number.

18258492994560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18258492994560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43142716108800).

18258492994560 is an abundant number, since it is smaller than the sum of its proper divisors (68026939223040).

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

18258492994560 is a wasteful number, since it uses less digits than its factorization.

18258492994560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 447897600, while the sum is 72.

The spelling of 18258492994560 in words is "eighteen trillion, two hundred fifty-eight billion, four hundred ninety-two million, nine hundred ninety-four thousand, five hundred sixty".