18513368062464 has 320 divisors, whose sum is σ = 54215661975552. Its totient is φ = 5567349964800.

The previous prime is 18513368062463. The next prime is 18513368062477. The reversal of 18513368062464 is 46426086331581.

It is not an unprimeable number, because it can be changed into a prime (18513368062463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1825590834 + ... + 1825600974.

Almost surely, 2^{18513368062464} 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 18513368062464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27107830987776).

18513368062464 is an abundant number, since it is smaller than the sum of its proper divisors (35702293913088).

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

18513368062464 is a wasteful number, since it uses less digits than its factorization.

18513368062464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10987 (or 10971 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 57.

The spelling of 18513368062464 in words is "eighteen trillion, five hundred thirteen billion, three hundred sixty-eight million, sixty-two thousand, four hundred sixty-four".