11491768404 has 288 divisors, whose sum is σ = 33633600000. Its totient is φ = 3415499136.

The previous prime is 11491768399. The next prime is 11491768439. The reversal of 11491768404 is 40486719411.

11491768404 is a `hidden beast` number, since 11 + 491 + 76 + 84 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 11491768404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23029347 + ... + 23029845.

Almost surely, 2^11491768404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11491768404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16816800000).

11491768404 is an abundant number, since it is smaller than the sum of its proper divisors (22141831596).

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

11491768404 is a wasteful number, since it uses less digits than its factorization.

11491768404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 11491768404 in words is "eleven billion, four hundred ninety-one million, seven hundred sixty-eight thousand, four hundred four".