11687967737 has 2 divisors, whose sum is σ = 11687967738. Its totient is φ = 11687967736.

The previous prime is 11687967659. The next prime is 11687967749. The reversal of 11687967737 is 73776978611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11521660921 + 166306816 = 107339^2 + 12896^2 .

It is a cyclic number.

It is not a de Polignac number, because 11687967737 - 2¹⁶ = 11687902201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11687967737.

It is not a weakly prime, because it can be changed into another prime (11687967757) 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, 5843983868 + 5843983869.

It is an arithmetic number, because the mean of its divisors is an integer number (5843983869).

Almost surely, 2^11687967737 is an apocalyptic number.

It is an amenable number.

11687967737 is a deficient number, since it is larger than the sum of its proper divisors (1).

11687967737 is an equidigital number, since it uses as much as digits as its factorization.

11687967737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18670176, while the sum is 62.

The spelling of 11687967737 in words is "eleven billion, six hundred eighty-seven million, nine hundred sixty-seven thousand, seven hundred thirty-seven".