72319120809 has 16 divisors (see below), whose sum is σ = 104296315200. Its totient is φ = 44309727936.

The previous prime is 72319120801. The next prime is 72319120873. The reversal of 72319120809 is 90802191327.

It is not a de Polignac number, because 72319120809 - 2³ = 72319120801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72319120801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4039839 + ... + 4057700.

It is an arithmetic number, because the mean of its divisors is an integer number (6518519700).

Almost surely, 2^72319120809 is an apocalyptic number.

It is an amenable number.

72319120809 is a deficient number, since it is larger than the sum of its proper divisors (31977194391).

72319120809 is a wasteful number, since it uses less digits than its factorization.

72319120809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8097784.

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 72319120809 in words is "seventy-two billion, three hundred nineteen million, one hundred twenty thousand, eight hundred nine".