11664236487 has 4 divisors (see below), whose sum is σ = 15552315320. Its totient is φ = 7776157656.

The previous prime is 11664236471. The next prime is 11664236501. The reversal of 11664236487 is 78463246611.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11664236487 - 2⁴ = 11664236471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11664236417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1944039412 + ... + 1944039417.

It is an arithmetic number, because the mean of its divisors is an integer number (3888078830).

Almost surely, 2^11664236487 is an apocalyptic number.

11664236487 is a deficient number, since it is larger than the sum of its proper divisors (3888078833).

11664236487 is an equidigital number, since it uses as much as digits as its factorization.

11664236487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888078832.

The product of its digits is 1161216, while the sum is 48.

The spelling of 11664236487 in words is "eleven billion, six hundred sixty-four million, two hundred thirty-six thousand, four hundred eighty-seven".