1311801574979 has 16 divisors (see below), whose sum is σ = 1500370050816. Its totient is φ = 1123525447200.

The previous prime is 1311801574973. The next prime is 1311801574981. The reversal of 1311801574979 is 9794751081131.

It is a cyclic number.

It is not a de Polignac number, because 1311801574979 - 2³² = 1307506607683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311801574973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89043044 + ... + 89057774.

It is an arithmetic number, because the mean of its divisors is an integer number (93773128176).

Almost surely, 2^{1311801574979} is an apocalyptic number.

1311801574979 is a deficient number, since it is larger than the sum of its proper divisors (188568475837).

1311801574979 is a wasteful number, since it uses less digits than its factorization.

1311801574979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23786.

The product of its (nonzero) digits is 1905120, while the sum is 56.

The spelling of 1311801574979 in words is "one trillion, three hundred eleven billion, eight hundred one million, five hundred seventy-four thousand, nine hundred seventy-nine".