11591287408 has 40 divisors (see below), whose sum is σ = 22913899488. Its totient is φ = 5678330112.

The previous prime is 11591287397. The next prime is 11591287451. The reversal of 11591287408 is 80478219511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620866 + ... + 639262.

Almost surely, 2^11591287408 is an apocalyptic number.

It is an amenable number.

11591287408 is a deficient number, since it is larger than the sum of its proper divisors (11322612080).

11591287408 is a wasteful number, since it uses less digits than its factorization.

11591287408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19201 (or 19195 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 46.

The spelling of 11591287408 in words is "eleven billion, five hundred ninety-one million, two hundred eighty-seven thousand, four hundred eight".