72319952945 has 8 divisors (see below), whose sum is σ = 87104181120. Its totient is φ = 57642470640.

The previous prime is 72319952933. The next prime is 72319952989. The reversal of 72319952945 is 54925991327.

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 72319952945 - 2¹² = 72319948849 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26684975 + ... + 26687684.

It is an arithmetic number, because the mean of its divisors is an integer number (10888022640).

Almost surely, 2^72319952945 is an apocalyptic number.

It is an amenable number.

72319952945 is a deficient number, since it is larger than the sum of its proper divisors (14784228175).

72319952945 is a wasteful number, since it uses less digits than its factorization.

72319952945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53372935.

The product of its digits is 6123600, while the sum is 56.

The spelling of 72319952945 in words is "seventy-two billion, three hundred nineteen million, nine hundred fifty-two thousand, nine hundred forty-five".