12516352400466 has 24 divisors (see below), whose sum is σ = 27123691745280. Its totient is φ = 4171359280536.

The previous prime is 12516352400449. The next prime is 12516352400467. The reversal of 12516352400466 is 66400425361521.

12516352400466 is a `hidden beast` number, since 1 + 2 + 5 + 1 + 63 + 524 + 0 + 0 + 4 + 66 = 666.

It is not an unprimeable number, because it can be changed into a prime (12516352400467) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63080386 + ... + 63278493.

It is an arithmetic number, because the mean of its divisors is an integer number (1130153822720).

Almost surely, 2^{12516352400466} is an apocalyptic number.

12516352400466 is an abundant number, since it is smaller than the sum of its proper divisors (14607339344814).

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

12516352400466 is a wasteful number, since it uses less digits than its factorization.

12516352400466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126364390 (or 126364387 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

Adding to 12516352400466 its reverse (66400425361521), we get a palindrome (78916777761987).

The spelling of 12516352400466 in words is "twelve trillion, five hundred sixteen billion, three hundred fifty-two million, four hundred thousand, four hundred sixty-six".