72816673399 has 2 divisors, whose sum is σ = 72816673400. Its totient is φ = 72816673398.

The previous prime is 72816673373. The next prime is 72816673409. The reversal of 72816673399 is 99337661827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72816673399 - 2¹¹ = 72816671351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72816673339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36408336699 + 36408336700.

It is an arithmetic number, because the mean of its divisors is an integer number (36408336700).

Almost surely, 2^72816673399 is an apocalyptic number.

72816673399 is a deficient number, since it is larger than the sum of its proper divisors (1).

72816673399 is an equidigital number, since it uses as much as digits as its factorization.

72816673399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20575296, while the sum is 61.

The spelling of 72816673399 in words is "seventy-two billion, eight hundred sixteen million, six hundred seventy-three thousand, three hundred ninety-nine".