72221500793 has 8 divisors (see below), whose sum is σ = 78650901000. Its totient is φ = 65916943488.

The previous prime is 72221500783. The next prime is 72221500801. The reversal of 72221500793 is 39700512227.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7101095824 + 65120404969 = 84268^2 + 255187^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 72221500793 - 2²⁸ = 71953065337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72221500783) 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, 31209518 + ... + 31211831.

It is an arithmetic number, because the mean of its divisors is an integer number (9831362625).

Almost surely, 2^72221500793 is an apocalyptic number.

It is an amenable number.

72221500793 is a deficient number, since it is larger than the sum of its proper divisors (6429400207).

72221500793 is a wasteful number, since it uses less digits than its factorization.

72221500793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62421451.

The product of its (nonzero) digits is 52920, while the sum is 38.

It can be divided in two parts, 7 and 2221500793, that multiplied together give a palindrome (15550505551).

The spelling of 72221500793 in words is "seventy-two billion, two hundred twenty-one million, five hundred thousand, seven hundred ninety-three".