1312516350666 has 48 divisors (see below), whose sum is σ = 2910895416000. Its totient is φ = 427187658240.

The previous prime is 1312516350661. The next prime is 1312516350667. The reversal of 1312516350666 is 6660536152131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1312516350661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2038506 + ... + 2603946.

It is an arithmetic number, because the mean of its divisors is an integer number (60643654500).

Almost surely, 2^{1312516350666} is an apocalyptic number.

1312516350666 is an abundant number, since it is smaller than the sum of its proper divisors (1598379065334).

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

1312516350666 is a wasteful number, since it uses less digits than its factorization.

1312516350666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568491 (or 568488 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The spelling of 1312516350666 in words is "one trillion, three hundred twelve billion, five hundred sixteen million, three hundred fifty thousand, six hundred sixty-six".