72309509422 has 64 divisors (see below), whose sum is σ = 115940160000. Its totient is φ = 33752936448.

The previous prime is 72309509387. The next prime is 72309509423. The reversal of 72309509422 is 22490590327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72309509423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161045454 + ... + 161045902.

It is an arithmetic number, because the mean of its divisors is an integer number (1811565000).

Almost surely, 2^72309509422 is an apocalyptic number.

72309509422 is a deficient number, since it is larger than the sum of its proper divisors (43630650578).

72309509422 is a wasteful number, since it uses less digits than its factorization.

72309509422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 72309509422 in words is "seventy-two billion, three hundred nine million, five hundred nine thousand, four hundred twenty-two".