18453561428736 has 648 divisors, whose sum is σ = 62563383923040. Its totient is φ = 5215494832128.

The previous prime is 18453561428711. The next prime is 18453561428759. The reversal of 18453561428736 is 63782416535481.

18453561428736 is a `hidden beast` number, since 1 + 8 + 4 + 5 + 3 + 5 + 614 + 2 + 8 + 7 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 13499312725 + ... + 13499314091.

It is an arithmetic number, because the mean of its divisors is an integer number (96548431980).

Almost surely, 2^{18453561428736} is an apocalyptic number.

18453561428736 is a gapful number since it is divisible by the number (16) 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 18453561428736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31281691961520).

18453561428736 is an abundant number, since it is smaller than the sum of its proper divisors (44109822494304).

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

18453561428736 is a wasteful number, since it uses less digits than its factorization.

18453561428736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2609 (or 2585 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 63.

The spelling of 18453561428736 in words is "eighteen trillion, four hundred fifty-three billion, five hundred sixty-one million, four hundred twenty-eight thousand, seven hundred thirty-six".