11953333687 has 2 divisors, whose sum is σ = 11953333688. Its totient is φ = 11953333686.

The previous prime is 11953333673. The next prime is 11953333757. The reversal of 11953333687 is 78633335911.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11953333687 - 2¹¹ = 11953331639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11953333687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11953333087) 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 as a sum of consecutive naturals, namely, 5976666843 + 5976666844.

It is an arithmetic number, because the mean of its divisors is an integer number (5976666844).

Almost surely, 2^11953333687 is an apocalyptic number.

11953333687 is a deficient number, since it is larger than the sum of its proper divisors (1).

11953333687 is an equidigital number, since it uses as much as digits as its factorization.

11953333687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 49.

The spelling of 11953333687 in words is "eleven billion, nine hundred fifty-three million, three hundred thirty-three thousand, six hundred eighty-seven".