72272543758276 has 81 divisors (see below), whose sum is σ = 136626378764967. Its totient is φ = 33444896590080.

The previous prime is 72272543758271. The next prime is 72272543758291. The reversal of 72272543758276 is 67285734527227.

The square root of 72272543758276 is 8501326.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 6668634816900 + 65603908941376 = 2582370^2 + 8099624^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72272543758271) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 17631748075 + ... + 17631752173.

Almost surely, 2^{72272543758276} is an apocalyptic number.

72272543758276 is the 8501326-th square number.

It is an amenable number.

72272543758276 is a deficient number, since it is larger than the sum of its proper divisors (64353835006691).

72272543758276 is an frugal number, since it uses more digits than its factorization.

72272543758276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8358 (or 4179 counting only the distinct ones).

The product of its digits is 553190400, while the sum is 67.

The spelling of 72272543758276 in words is "seventy-two trillion, two hundred seventy-two billion, five hundred forty-three million, seven hundred fifty-eight thousand, two hundred seventy-six".