72864364361 has 2 divisors, whose sum is σ = 72864364362. Its totient is φ = 72864364360.

The previous prime is 72864364337. The next prime is 72864364399. The reversal of 72864364361 is 16346346827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68300686336 + 4563678025 = 261344^2 + 67555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72864364361 is a prime.

It is not a weakly prime, because it can be changed into another prime (72864367361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36432182180 + 36432182181.

It is an arithmetic number, because the mean of its divisors is an integer number (36432182181).

Almost surely, 2^72864364361 is an apocalyptic number.

It is an amenable number.

72864364361 is a deficient number, since it is larger than the sum of its proper divisors (1).

72864364361 is an equidigital number, since it uses as much as digits as its factorization.

72864364361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3483648, while the sum is 50.

The spelling of 72864364361 in words is "seventy-two billion, eight hundred sixty-four million, three hundred sixty-four thousand, three hundred sixty-one".