1312369866977 has 4 divisors (see below), whose sum is σ = 1413321395220. Its totient is φ = 1211418338736.

The previous prime is 1312369866967. The next prime is 1312369866979. The reversal of 1312369866977 is 7796689632131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94180858321 + 1218189008656 = 306889^2 + 1103716^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312369866977 - 2⁴ = 1312369866961 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 50475764102 + ... + 50475764127.

It is an arithmetic number, because the mean of its divisors is an integer number (353330348805).

Almost surely, 2^{1312369866977} is an apocalyptic number.

It is an amenable number.

1312369866977 is a deficient number, since it is larger than the sum of its proper divisors (100951528243).

1312369866977 is a wasteful number, since it uses less digits than its factorization.

1312369866977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100951528242.

The product of its digits is 123451776, while the sum is 68.

The spelling of 1312369866977 in words is "one trillion, three hundred twelve billion, three hundred sixty-nine million, eight hundred sixty-six thousand, nine hundred seventy-seven".