1311643046259 has 48 divisors (see below), whose sum is σ = 2433192932352. Its totient is φ = 661774981824.

The previous prime is 1311643046243. The next prime is 1311643046261. The reversal of 1311643046259 is 9526403461131.

1311643046259 is a `hidden beast` number, since 1 + 3 + 1 + 16 + 4 + 3 + 0 + 4 + 625 + 9 = 666.

It is not a de Polignac number, because 1311643046259 - 2⁴ = 1311643046243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311643046209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34796767 + ... + 34834440.

It is an arithmetic number, because the mean of its divisors is an integer number (50691519424).

Almost surely, 2^{1311643046259} is an apocalyptic number.

1311643046259 is a deficient number, since it is larger than the sum of its proper divisors (1121549886093).

1311643046259 is a wasteful number, since it uses less digits than its factorization.

1311643046259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69631256 (or 69631253 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 1311643046259 in words is "one trillion, three hundred eleven billion, six hundred forty-three million, forty-six thousand, two hundred fifty-nine".