18492366428640 has 1152 divisors, whose sum is σ = 73283090549760. Its totient is φ = 4345076736000.

The previous prime is 18492366428633. The next prime is 18492366428651. The reversal of 18492366428640 is 4682466329481.

It is a happy number.

18492366428640 is a `hidden beast` number, since 1 + 8 + 4 + 92 + 3 + 66 + 428 + 64 + 0 = 666.

It is a super-2 number, since 2×18492366428640² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 11771079055 + ... + 11771080625.

It is an arithmetic number, because the mean of its divisors is an integer number (63613793880).

Almost surely, 2^{18492366428640} is an apocalyptic number.

18492366428640 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 18492366428640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36641545274880).

18492366428640 is an abundant number, since it is smaller than the sum of its proper divisors (54790724121120).

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

18492366428640 is a wasteful number, since it uses less digits than its factorization.

18492366428640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345 (or 2318 counting only the distinct ones).

The product of its (nonzero) digits is 95551488, while the sum is 63.

The spelling of 18492366428640 in words is "eighteen trillion, four hundred ninety-two billion, three hundred sixty-six million, four hundred twenty-eight thousand, six hundred forty".