11830525643 has 4 divisors (see below), whose sum is σ = 11832235560. Its totient is φ = 11828815728.

The previous prime is 11830525639. The next prime is 11830525717. The reversal of 11830525643 is 34652503811.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11830525643 - 2² = 11830525639 is a prime.

It is a super-2 number, since 2×11830525643² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11830525597 and 11830525606.

It is not an unprimeable number, because it can be changed into a prime (11830525633) 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 3 ways as a sum of consecutive naturals, for example, 844538 + ... + 858431.

It is an arithmetic number, because the mean of its divisors is an integer number (2958058890).

Almost surely, 2^11830525643 is an apocalyptic number.

11830525643 is a deficient number, since it is larger than the sum of its proper divisors (1709917).

11830525643 is an equidigital number, since it uses as much as digits as its factorization.

11830525643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709916.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 11830525643 in words is "eleven billion, eight hundred thirty million, five hundred twenty-five thousand, six hundred forty-three".