72308908873 has 2 divisors, whose sum is σ = 72308908874. Its totient is φ = 72308908872.

The previous prime is 72308908853. The next prime is 72308908913. The reversal of 72308908873 is 37880980327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61007518009 + 11301390864 = 246997^2 + 106308^2 .

It is a cyclic number.

It is not a de Polignac number, because 72308908873 - 2³³ = 63718974281 is a prime.

It is not a weakly prime, because it can be changed into another prime (72308908813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36154454436 + 36154454437.

It is an arithmetic number, because the mean of its divisors is an integer number (36154454437).

Almost surely, 2^72308908873 is an apocalyptic number.

It is an amenable number.

72308908873 is a deficient number, since it is larger than the sum of its proper divisors (1).

72308908873 is an equidigital number, since it uses as much as digits as its factorization.

72308908873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 72308908873 in words is "seventy-two billion, three hundred eight million, nine hundred eight thousand, eight hundred seventy-three".