72744699089 has 2 divisors, whose sum is σ = 72744699090. Its totient is φ = 72744699088.

The previous prime is 72744699067. The next prime is 72744699121. The reversal of 72744699089 is 98099644727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58629358225 + 14115340864 = 242135^2 + 118808^2 .

It is a cyclic number.

It is not a de Polignac number, because 72744699089 - 2¹⁶ = 72744633553 is a prime.

It is not a weakly prime, because it can be changed into another prime (72744699289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36372349544 + 36372349545.

It is an arithmetic number, because the mean of its divisors is an integer number (36372349545).

Almost surely, 2^72744699089 is an apocalyptic number.

It is an amenable number.

72744699089 is a deficient number, since it is larger than the sum of its proper divisors (1).

72744699089 is an equidigital number, since it uses as much as digits as its factorization.

72744699089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54867456, while the sum is 65.

The spelling of 72744699089 in words is "seventy-two billion, seven hundred forty-four million, six hundred ninety-nine thousand, eighty-nine".