18464254647264 has 192 divisors, whose sum is σ = 54618424822080. Its totient is φ = 6067479674880.

The previous prime is 18464254647263. The next prime is 18464254647283. The reversal of 18464254647264 is 46274645246481.

18464254647264 is a `hidden beast` number, since 1 + 8 + 4 + 6 + 42 + 5 + 464 + 72 + 64 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18464254647263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131182494 + ... + 131323170.

It is an arithmetic number, because the mean of its divisors is an integer number (284470962615).

Almost surely, 2^{18464254647264} 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 18464254647264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27309212411040).

18464254647264 is an abundant number, since it is smaller than the sum of its proper divisors (36154170174816).

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

18464254647264 is a wasteful number, since it uses less digits than its factorization.

18464254647264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142850 (or 142836 counting only the distinct ones).

The product of its digits is 247726080, while the sum is 63.

The spelling of 18464254647264 in words is "eighteen trillion, four hundred sixty-four billion, two hundred fifty-four million, six hundred forty-seven thousand, two hundred sixty-four".