1312448136278 has 16 divisors (see below), whose sum is σ = 1996766069760. Its totient is φ = 646862836200.

The previous prime is 1312448136277. The next prime is 1312448136343. The reversal of 1312448136278 is 8726318442131.

It is a super-2 number, since 2×1312448136278² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312448136277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67808 + ... + 1621571.

It is an arithmetic number, because the mean of its divisors is an integer number (124797879360).

Almost surely, 2^{1312448136278} is an apocalyptic number.

1312448136278 is a deficient number, since it is larger than the sum of its proper divisors (684317933482).

1312448136278 is a wasteful number, since it uses less digits than its factorization.

1312448136278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694923.

The product of its digits is 1548288, while the sum is 50.

The spelling of 1312448136278 in words is "one trillion, three hundred twelve billion, four hundred forty-eight million, one hundred thirty-six thousand, two hundred seventy-eight".