11742784691 has 16 divisors (see below), whose sum is σ = 13070090880. Its totient is φ = 10459961280.

The previous prime is 11742784673. The next prime is 11742784693. The reversal of 11742784691 is 19648724711.

It is a cyclic number.

It is not a de Polignac number, because 11742784691 - 2¹⁴ = 11742768307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11742784693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169775 + ... + 228711.

It is an arithmetic number, because the mean of its divisors is an integer number (816880680).

Almost surely, 2^11742784691 is an apocalyptic number.

11742784691 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11742784691 is a deficient number, since it is larger than the sum of its proper divisors (1327306189).

11742784691 is a wasteful number, since it uses less digits than its factorization.

11742784691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59314.

The product of its digits is 677376, while the sum is 50.

The spelling of 11742784691 in words is "eleven billion, seven hundred forty-two million, seven hundred eighty-four thousand, six hundred ninety-one".