11883721869 has 8 divisors (see below), whose sum is σ = 17605513920. Its totient is φ = 7922481228.

The previous prime is 11883721867. The next prime is 11883721897. The reversal of 11883721869 is 96812738811.

11883721869 is a `hidden beast` number, since 11 + 88 + 372 + 186 + 9 = 666.

It is not a de Polignac number, because 11883721869 - 2¹ = 11883721867 is a prime.

It is a super-2 number, since 2×11883721869² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11883721867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220068897 + ... + 220068950.

It is an arithmetic number, because the mean of its divisors is an integer number (2200689240).

Almost surely, 2^11883721869 is an apocalyptic number.

It is an amenable number.

11883721869 is a deficient number, since it is larger than the sum of its proper divisors (5721792051).

11883721869 is an equidigital number, since it uses as much as digits as its factorization.

11883721869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440137856 (or 440137850 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 54.

The spelling of 11883721869 in words is "eleven billion, eight hundred eighty-three million, seven hundred twenty-one thousand, eight hundred sixty-nine".