11987165293 has 2 divisors, whose sum is σ = 11987165294. Its totient is φ = 11987165292.

The previous prime is 11987165263. The next prime is 11987165299. The reversal of 11987165293 is 39256178911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9796644484 + 2190520809 = 98978^2 + 46803^2 .

It is an emirp because it is prime and its reverse (39256178911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11987165293 - 2⁹ = 11987164781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11987165293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11987165299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5993582646 + 5993582647.

It is an arithmetic number, because the mean of its divisors is an integer number (5993582647).

Almost surely, 2^11987165293 is an apocalyptic number.

It is an amenable number.

11987165293 is a deficient number, since it is larger than the sum of its proper divisors (1).

11987165293 is an equidigital number, since it uses as much as digits as its factorization.

11987165293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 52.

The spelling of 11987165293 in words is "eleven billion, nine hundred eighty-seven million, one hundred sixty-five thousand, two hundred ninety-three".