72923499793 has 2 divisors, whose sum is σ = 72923499794. Its totient is φ = 72923499792.

The previous prime is 72923499787. The next prime is 72923499811. The reversal of 72923499793 is 39799432927.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71897450769 + 1026049024 = 268137^2 + 32032^2 .

It is an emirp because it is prime and its reverse (39799432927) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72923499793 is a prime.

It is not a weakly prime, because it can be changed into another prime (72923499773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36461749896 + 36461749897.

It is an arithmetic number, because the mean of its divisors is an integer number (36461749897).

Almost surely, 2^72923499793 is an apocalyptic number.

It is an amenable number.

72923499793 is a deficient number, since it is larger than the sum of its proper divisors (1).

72923499793 is an equidigital number, since it uses as much as digits as its factorization.

72923499793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46294416, while the sum is 64.

The spelling of 72923499793 in words is "seventy-two billion, nine hundred twenty-three million, four hundred ninety-nine thousand, seven hundred ninety-three".