72423667859 has 2 divisors, whose sum is σ = 72423667860. Its totient is φ = 72423667858.

The previous prime is 72423667751. The next prime is 72423667879. The reversal of 72423667859 is 95876632427.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72423667859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72423667798 and 72423667807.

It is not a weakly prime, because it can be changed into another prime (72423667879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36211833929 + 36211833930.

It is an arithmetic number, because the mean of its divisors is an integer number (36211833930).

Almost surely, 2^72423667859 is an apocalyptic number.

72423667859 is a deficient number, since it is larger than the sum of its proper divisors (1).

72423667859 is an equidigital number, since it uses as much as digits as its factorization.

72423667859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30481920, while the sum is 59.

The spelling of 72423667859 in words is "seventy-two billion, four hundred twenty-three million, six hundred sixty-seven thousand, eight hundred fifty-nine".