72423445065 has 8 divisors (see below), whose sum is σ = 115877512128. Its totient is φ = 38625837360.

The previous prime is 72423445057. The next prime is 72423445091. The reversal of 72423445065 is 56054432427.

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

It is not a de Polignac number, because 72423445065 - 2³ = 72423445057 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2414114821 + ... + 2414114850.

It is an arithmetic number, because the mean of its divisors is an integer number (14484689016).

Almost surely, 2^72423445065 is an apocalyptic number.

It is an amenable number.

72423445065 is a deficient number, since it is larger than the sum of its proper divisors (43454067063).

72423445065 is a wasteful number, since it uses less digits than its factorization.

72423445065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4828229679.

The product of its (nonzero) digits is 806400, while the sum is 42.

The spelling of 72423445065 in words is "seventy-two billion, four hundred twenty-three million, four hundred forty-five thousand, sixty-five".