1311940718979 has 8 divisors (see below), whose sum is σ = 1908277409472. Its totient is φ = 795115587240.

The previous prime is 1311940718951. The next prime is 1311940718981. The reversal of 1311940718979 is 9798170491131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1311940718979 - 2⁸ = 1311940718723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311940718989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19877889649 + ... + 19877889714.

It is an arithmetic number, because the mean of its divisors is an integer number (238534676184).

Almost surely, 2^{1311940718979} is an apocalyptic number.

1311940718979 is a deficient number, since it is larger than the sum of its proper divisors (596336690493).

1311940718979 is a wasteful number, since it uses less digits than its factorization.

1311940718979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39755779377.

The product of its (nonzero) digits is 3429216, while the sum is 60.

The spelling of 1311940718979 in words is "one trillion, three hundred eleven billion, nine hundred forty million, seven hundred eighteen thousand, nine hundred seventy-nine".