11744987787 has 48 divisors (see below), whose sum is σ = 18540089568. Its totient is φ = 7121571840.

The previous prime is 11744987777. The next prime is 11744987833. The reversal of 11744987787 is 78778944711.

11744987787 is a `hidden beast` number, since 1 + 1 + 74 + 498 + 7 + 78 + 7 = 666.

It is not a de Polignac number, because 11744987787 - 2⁸ = 11744987531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11744987747) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2413737 + ... + 2418597.

It is an arithmetic number, because the mean of its divisors is an integer number (386251866).

Almost surely, 2^11744987787 is an apocalyptic number.

11744987787 is a deficient number, since it is larger than the sum of its proper divisors (6795101781).

11744987787 is a wasteful number, since it uses less digits than its factorization.

11744987787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5180 (or 5177 counting only the distinct ones).

The product of its digits is 22127616, while the sum is 63.

The spelling of 11744987787 in words is "eleven billion, seven hundred forty-four million, nine hundred eighty-seven thousand, seven hundred eighty-seven".