72322459985 has 4 divisors (see below), whose sum is σ = 86786951988. Its totient is φ = 57857967984.

The previous prime is 72322459981. The next prime is 72322460017. The reversal of 72322459985 is 58995422327.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58995422327 = 40231 ⋅1466417.

It can be written as a sum of positive squares in 2 ways, for example, as 48174543169 + 24147916816 = 219487^2 + 155396^2 .

It is a cyclic number.

It is not a de Polignac number, because 72322459985 - 2² = 72322459981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72322459985.

It is not an unprimeable number, because it can be changed into a prime (72322459981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7232245994 + ... + 7232246003.

It is an arithmetic number, because the mean of its divisors is an integer number (21696737997).

Almost surely, 2^72322459985 is an apocalyptic number.

It is an amenable number.

72322459985 is a deficient number, since it is larger than the sum of its proper divisors (14464492003).

72322459985 is a wasteful number, since it uses less digits than its factorization.

72322459985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14464492002.

The product of its digits is 10886400, while the sum is 56.

The spelling of 72322459985 in words is "seventy-two billion, three hundred twenty-two million, four hundred fifty-nine thousand, nine hundred eighty-five".