72320238566 has 16 divisors (see below), whose sum is σ = 110122119648. Its totient is φ = 35616576000.

The previous prime is 72320238563. The next prime is 72320238569. The reversal of 72320238566 is 66583202327.

It is an interprime number because it is at equal distance from previous prime (72320238563) and next prime (72320238569).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72320238563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 888530 + ... + 966501.

It is an arithmetic number, because the mean of its divisors is an integer number (6882632478).

Almost surely, 2^72320238566 is an apocalyptic number.

72320238566 is a deficient number, since it is larger than the sum of its proper divisors (37801881082).

72320238566 is a wasteful number, since it uses less digits than its factorization.

72320238566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855327.

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 72320238566 in words is "seventy-two billion, three hundred twenty million, two hundred thirty-eight thousand, five hundred sixty-six".