11533240687 has 2 divisors, whose sum is σ = 11533240688. Its totient is φ = 11533240686.

The previous prime is 11533240661. The next prime is 11533240699. The reversal of 11533240687 is 78604233511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11533240687 - 2¹⁵ = 11533207919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11533240387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5766620343 + 5766620344.

It is an arithmetic number, because the mean of its divisors is an integer number (5766620344).

Almost surely, 2^11533240687 is an apocalyptic number.

11533240687 is a deficient number, since it is larger than the sum of its proper divisors (1).

11533240687 is an equidigital number, since it uses as much as digits as its factorization.

11533240687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 11533240687 in words is "eleven billion, five hundred thirty-three million, two hundred forty thousand, six hundred eighty-seven".