72246244277 has 12 divisors (see below), whose sum is σ = 72917768196. Its totient is φ = 71577991680.

The previous prime is 72246244261. The next prime is 72246244283. The reversal of 72246244277 is 77244264227.

It can be written as a sum of positive squares in 6 ways, for example, as 301057201 + 71945187076 = 17351^2 + 268226^2 .

It is not a de Polignac number, because 72246244277 - 2⁴ = 72246244261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72246249277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23755877 + ... + 23758917.

It is an arithmetic number, because the mean of its divisors is an integer number (6076480683).

Almost surely, 2^72246244277 is an apocalyptic number.

It is an amenable number.

72246244277 is a deficient number, since it is larger than the sum of its proper divisors (671523919).

72246244277 is an equidigital number, since it uses as much as digits as its factorization.

72246244277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3976 (or 3587 counting only the distinct ones).

The product of its digits is 2107392, while the sum is 47.

The spelling of 72246244277 in words is "seventy-two billion, two hundred forty-six million, two hundred forty-four thousand, two hundred seventy-seven".