18364180916466 has 256 divisors, whose sum is σ = 53099338752000. Its totient is φ = 4561834464000.

The previous prime is 18364180916449. The next prime is 18364180916503. The reversal of 18364180916466 is 66461908146381.

It is a happy number.

18364180916466 is a `hidden beast` number, since 1 + 8 + 3 + 6 + 4 + 1 + 80 + 91 + 6 + 466 = 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 127 ways as a sum of consecutive naturals, for example, 951453016 + ... + 951472316.

It is an arithmetic number, because the mean of its divisors is an integer number (207419292000).

Almost surely, 2^{18364180916466} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18364180916466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26549669376000).

18364180916466 is an abundant number, since it is smaller than the sum of its proper divisors (34735157835534).

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

18364180916466 is a wasteful number, since it uses less digits than its factorization.

18364180916466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29302 (or 29296 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 63.

The spelling of 18364180916466 in words is "eighteen trillion, three hundred sixty-four billion, one hundred eighty million, nine hundred sixteen thousand, four hundred sixty-six".