11765722849 has 32 divisors (see below), whose sum is σ = 12976128000. Its totient is φ = 10625235264.

The previous prime is 11765722789. The next prime is 11765722873. The reversal of 11765722849 is 94822756711.

It is a cyclic number.

It is not a de Polignac number, because 11765722849 - 2⁹ = 11765722337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11765722796 and 11765722805.

It is not an unprimeable number, because it can be changed into a prime (11765722349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26800972 + ... + 26801410.

It is an arithmetic number, because the mean of its divisors is an integer number (405504000).

Almost surely, 2^11765722849 is an apocalyptic number.

11765722849 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11765722849 is a deficient number, since it is larger than the sum of its proper divisors (1210405151).

11765722849 is a wasteful number, since it uses less digits than its factorization.

11765722849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997.

The product of its digits is 1693440, while the sum is 52.

The spelling of 11765722849 in words is "eleven billion, seven hundred sixty-five million, seven hundred twenty-two thousand, eight hundred forty-nine".