1165526240999 has 2 divisors, whose sum is σ = 1165526241000. Its totient is φ = 1165526240998.

The previous prime is 1165526240953. The next prime is 1165526241031. The reversal of 1165526240999 is 9990426255611.

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-1165526240999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1165526240909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582763120499 + 582763120500.

It is an arithmetic number, because the mean of its divisors is an integer number (582763120500).

Almost surely, 2^{1165526240999} is an apocalyptic number.

1165526240999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165526240999 is an equidigital number, since it uses as much as digits as its factorization.

1165526240999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10497600, while the sum is 59.

The spelling of 1165526240999 in words is "one trillion, one hundred sixty-five billion, five hundred twenty-six million, two hundred forty thousand, nine hundred ninety-nine".