72665103123659 has 2 divisors, whose sum is σ = 72665103123660. Its totient is φ = 72665103123658.

The previous prime is 72665103123653. The next prime is 72665103123707. The reversal of 72665103123659 is 95632130156627.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72665103123659 - 2¹⁶ = 72665103058123 is a prime.

It is not a weakly prime, because it can be changed into another prime (72665103123653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36332551561829 + 36332551561830.

It is an arithmetic number, because the mean of its divisors is an integer number (36332551561830).

Almost surely, 2^{72665103123659} is an apocalyptic number.

72665103123659 is a deficient number, since it is larger than the sum of its proper divisors (1).

72665103123659 is an equidigital number, since it uses as much as digits as its factorization.

72665103123659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12247200, while the sum is 56.

The spelling of 72665103123659 in words is "seventy-two trillion, six hundred sixty-five billion, one hundred three million, one hundred twenty-three thousand, six hundred fifty-nine".