11945921583 has 8 divisors (see below), whose sum is σ = 15951425328. Its totient is φ = 7952182784.

The previous prime is 11945921569. The next prime is 11945921587. The reversal of 11945921583 is 38512954911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11945921583 - 2⁸ = 11945921327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11945921587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2938866 + ... + 2942927.

It is an arithmetic number, because the mean of its divisors is an integer number (1993928166).

Almost surely, 2^11945921583 is an apocalyptic number.

11945921583 is a deficient number, since it is larger than the sum of its proper divisors (4005503745).

11945921583 is an equidigital number, since it uses as much as digits as its factorization.

11945921583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882473.

The product of its digits is 388800, while the sum is 48.

The spelling of 11945921583 in words is "eleven billion, nine hundred forty-five million, nine hundred twenty-one thousand, five hundred eighty-three".