18007740478464 has 704 divisors, whose sum is σ = 57700199301120. Its totient is φ = 4932071424000.

The previous prime is 18007740478381. The next prime is 18007740478489. The reversal of 18007740478464 is 46487404770081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (704).

It is a junction number, because it is equal to n+sod(n) for n = 18007740478398 and 18007740478407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1413141277 + ... + 1413154019.

Almost surely, 2^{18007740478464} 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 18007740478464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28850099650560).

18007740478464 is an abundant number, since it is smaller than the sum of its proper divisors (39692458822656).

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

18007740478464 is a wasteful number, since it uses less digits than its factorization.

18007740478464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12898 (or 12880 counting only the distinct ones).

The product of its (nonzero) digits is 33718272, while the sum is 60.

The spelling of 18007740478464 in words is "eighteen trillion, seven billion, seven hundred forty million, four hundred seventy-eight thousand, four hundred sixty-four".