72660156737089 has 2 divisors, whose sum is σ = 72660156737090. Its totient is φ = 72660156737088.

The previous prime is 72660156737039. The next prime is 72660156737093. The reversal of 72660156737089 is 98073765106627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71978120256064 + 682036481025 = 8483992^2 + 825855^2 .

It is a cyclic number.

It is not a de Polignac number, because 72660156737089 - 2⁹ = 72660156736577 is a prime.

It is not a weakly prime, because it can be changed into another prime (72660156737039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36330078368544 + 36330078368545.

It is an arithmetic number, because the mean of its divisors is an integer number (36330078368545).

Almost surely, 2^{72660156737089} is an apocalyptic number.

It is an amenable number.

72660156737089 is a deficient number, since it is larger than the sum of its proper divisors (1).

72660156737089 is an equidigital number, since it uses as much as digits as its factorization.

72660156737089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160030080, while the sum is 67.

The spelling of 72660156737089 in words is "seventy-two trillion, six hundred sixty billion, one hundred fifty-six million, seven hundred thirty-seven thousand, eighty-nine".