72245156833 has 2 divisors, whose sum is σ = 72245156834. Its totient is φ = 72245156832.

The previous prime is 72245156801. The next prime is 72245156839. The reversal of 72245156833 is 33865154227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58183228944 + 14061927889 = 241212^2 + 118583^2 .

It is an emirp because it is prime and its reverse (33865154227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72245156833 - 2⁵ = 72245156801 is a prime.

It is not a weakly prime, because it can be changed into another prime (72245156839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36122578416 + 36122578417.

It is an arithmetic number, because the mean of its divisors is an integer number (36122578417).

Almost surely, 2^72245156833 is an apocalyptic number.

It is an amenable number.

72245156833 is a deficient number, since it is larger than the sum of its proper divisors (1).

72245156833 is an equidigital number, since it uses as much as digits as its factorization.

72245156833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 46.

The spelling of 72245156833 in words is "seventy-two billion, two hundred forty-five million, one hundred fifty-six thousand, eight hundred thirty-three".