12516465620466 has 32 divisors (see below), whose sum is σ = 28060512909120. Its totient is φ = 4135233477312.

The previous prime is 12516465620413. The next prime is 12516465620479. The reversal of 12516465620466 is 66402656461521.

12516465620466 is a `hidden beast` number, since 1 + 2 + 5 + 1 + 6 + 4 + 6 + 5 + 620 + 4 + 6 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1025597440 + ... + 1025609643.

It is an arithmetic number, because the mean of its divisors is an integer number (876891028410).

Almost surely, 2^{12516465620466} is an apocalyptic number.

12516465620466 is an abundant number, since it is smaller than the sum of its proper divisors (15544047288654).

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

12516465620466 is a wasteful number, since it uses less digits than its factorization.

12516465620466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051207207 (or 2051207201 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 54.

The spelling of 12516465620466 in words is "twelve trillion, five hundred sixteen billion, four hundred sixty-five million, six hundred twenty thousand, four hundred sixty-six".