72320607722 has 64 divisors (see below), whose sum is σ = 120992486400. Its totient is φ = 32147280000.

The previous prime is 72320607691. The next prime is 72320607731. The reversal of 72320607722 is 22770602327.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97862429 + ... + 97863167.

It is an arithmetic number, because the mean of its divisors is an integer number (1890507600).

Almost surely, 2^72320607722 is an apocalyptic number.

72320607722 is a deficient number, since it is larger than the sum of its proper divisors (48671878678).

72320607722 is a wasteful number, since it uses less digits than its factorization.

72320607722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323.

The product of its (nonzero) digits is 98784, while the sum is 38.

The spelling of 72320607722 in words is "seventy-two billion, three hundred twenty million, six hundred seven thousand, seven hundred twenty-two".