72363233689 has 2 divisors, whose sum is σ = 72363233690. Its totient is φ = 72363233688.

The previous prime is 72363233653. The next prime is 72363233699. The reversal of 72363233689 is 98633236327.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53289414025 + 19073819664 = 230845^2 + 138108^2 .

It is a cyclic number.

It is not a de Polignac number, because 72363233689 - 2²¹ = 72361136537 is a prime.

It is not a weakly prime, because it can be changed into another prime (72363233609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36181616844 + 36181616845.

It is an arithmetic number, because the mean of its divisors is an integer number (36181616845).

Almost surely, 2^72363233689 is an apocalyptic number.

It is an amenable number.

72363233689 is a deficient number, since it is larger than the sum of its proper divisors (1).

72363233689 is an equidigital number, since it uses as much as digits as its factorization.

72363233689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 52.

The spelling of 72363233689 in words is "seventy-two billion, three hundred sixty-three million, two hundred thirty-three thousand, six hundred eighty-nine".