52445641989 has 8 divisors (see below), whose sum is σ = 75306562912. Its totient is φ = 32274241200.

The previous prime is 52445641967. The next prime is 52445641991. The reversal of 52445641989 is 98914654425.

It is a happy number.

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

It is not a de Polignac number, because 52445641989 - 2¹⁹ = 52445117701 is a prime.

It is a super-2 number, since 2×52445641989² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52445648989) 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, 672379987 + ... + 672380064.

It is an arithmetic number, because the mean of its divisors is an integer number (9413320364).

Almost surely, 2^52445641989 is an apocalyptic number.

It is an amenable number.

52445641989 is a deficient number, since it is larger than the sum of its proper divisors (22860920923).

52445641989 is a wasteful number, since it uses less digits than its factorization.

52445641989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344760067.

The product of its digits is 12441600, while the sum is 57.

The spelling of 52445641989 in words is "fifty-two billion, four hundred forty-five million, six hundred forty-one thousand, nine hundred eighty-nine".