72983399161 has 2 divisors, whose sum is σ = 72983399162. Its totient is φ = 72983399160.

The previous prime is 72983399149. The next prime is 72983399297. The reversal of 72983399161 is 16199338927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48391200400 + 24592198761 = 219980^2 + 156819^2 .

It is a cyclic number.

It is not a de Polignac number, because 72983399161 - 2⁷ = 72983399033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72983399096 and 72983399105.

It is not a weakly prime, because it can be changed into another prime (72983399101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36491699580 + 36491699581.

It is an arithmetic number, because the mean of its divisors is an integer number (36491699581).

Almost surely, 2^72983399161 is an apocalyptic number.

It is an amenable number.

72983399161 is a deficient number, since it is larger than the sum of its proper divisors (1).

72983399161 is an equidigital number, since it uses as much as digits as its factorization.

72983399161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4408992, while the sum is 58.

The spelling of 72983399161 in words is "seventy-two billion, nine hundred eighty-three million, three hundred ninety-nine thousand, one hundred sixty-one".