72930920833 has 2 divisors, whose sum is σ = 72930920834. Its totient is φ = 72930920832.

The previous prime is 72930920801. The next prime is 72930920857. The reversal of 72930920833 is 33802903927.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64347454224 + 8583466609 = 253668^2 + 92647^2 .

It is a cyclic number.

It is not a de Polignac number, because 72930920833 - 2⁵ = 72930920801 is a prime.

It is not a weakly prime, because it can be changed into another prime (72930920233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36465460416 + 36465460417.

It is an arithmetic number, because the mean of its divisors is an integer number (36465460417).

Almost surely, 2^72930920833 is an apocalyptic number.

It is an amenable number.

72930920833 is a deficient number, since it is larger than the sum of its proper divisors (1).

72930920833 is an equidigital number, since it uses as much as digits as its factorization.

72930920833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 46.

The spelling of 72930920833 in words is "seventy-two billion, nine hundred thirty million, nine hundred twenty thousand, eight hundred thirty-three".