1115965585243 has 2 divisors, whose sum is σ = 1115965585244. Its totient is φ = 1115965585242.

The previous prime is 1115965585223. The next prime is 1115965585249. The reversal of 1115965585243 is 3425855695111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115965585243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115965585249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557982792621 + 557982792622.

It is an arithmetic number, because the mean of its divisors is an integer number (557982792622).

Almost surely, 2^{1115965585243} is an apocalyptic number.

1115965585243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115965585243 is an equidigital number, since it uses as much as digits as its factorization.

1115965585243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480000, while the sum is 55.

The spelling of 1115965585243 in words is "one trillion, one hundred fifteen billion, nine hundred sixty-five million, five hundred eighty-five thousand, two hundred forty-three".