1312369866978 has 64 divisors (see below), whose sum is σ = 2852420321280. Its totient is φ = 401005987200.

The previous prime is 1312369866967. The next prime is 1312369866979. The reversal of 1312369866978 is 8796689632131.

It is not an unprimeable number, because it can be changed into a prime (1312369866979) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28924326 + ... + 28969662.

It is an arithmetic number, because the mean of its divisors is an integer number (44569067520).

Almost surely, 2^{1312369866978} is an apocalyptic number.

1312369866978 is an abundant number, since it is smaller than the sum of its proper divisors (1540050454302).

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

1312369866978 is a wasteful number, since it uses less digits than its factorization.

1312369866978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53583.

The product of its digits is 141087744, while the sum is 69.

The spelling of 1312369866978 in words is "one trillion, three hundred twelve billion, three hundred sixty-nine million, eight hundred sixty-six thousand, nine hundred seventy-eight".