66317375412400 has 240 divisors, whose sum is σ = 191689682860800. Its totient is φ = 21538713646080.

The previous prime is 66317375412397. The next prime is 66317375412401. The reversal of 66317375412400 is 421457371366.

It is not an unprimeable number, because it can be changed into a prime (66317375412401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 652659999 + ... + 652761601.

It is an arithmetic number, because the mean of its divisors is an integer number (798707011920).

Almost surely, 2^{66317375412400} 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 66317375412400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95844841430400).

66317375412400 is an abundant number, since it is smaller than the sum of its proper divisors (125372307448400).

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

66317375412400 is a wasteful number, since it uses less digits than its factorization.

66317375412400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113916 (or 113905 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 66317375412400 in words is "sixty-six trillion, three hundred seventeen billion, three hundred seventy-five million, four hundred twelve thousand, four hundred".