11789997408 has 108 divisors (see below), whose sum is σ = 39001779180. Its totient is φ = 3368566656.

The previous prime is 11789997397. The next prime is 11789997413. The reversal of 11789997408 is 80479998711.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 403618 + ... + 431841.

It is an arithmetic number, because the mean of its divisors is an integer number (361127585).

Almost surely, 2^11789997408 is an apocalyptic number.

11789997408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11789997408 is an abundant number, since it is smaller than the sum of its proper divisors (27211781772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11789997408 is a wasteful number, since it uses less digits than its factorization.

11789997408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835489 (or 835471 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 63.

The spelling of 11789997408 in words is "eleven billion, seven hundred eighty-nine million, nine hundred ninety-seven thousand, four hundred eight".