72800000837 has 2 divisors, whose sum is σ = 72800000838. Its totient is φ = 72800000836.

The previous prime is 72800000827. The next prime is 72800000839. The reversal of 72800000837 is 73800000827.

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., 40745037316 + 32054963521 = 201854^2 + 179039^2 .

It is a cyclic number.

It is not a de Polignac number, because 72800000837 - 2²⁴ = 72783223621 is a prime.

Together with 72800000839, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72800000797 and 72800000806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72800000839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36400000418 + 36400000419.

It is an arithmetic number, because the mean of its divisors is an integer number (36400000419).

Almost surely, 2^72800000837 is an apocalyptic number.

It is an amenable number.

72800000837 is a deficient number, since it is larger than the sum of its proper divisors (1).

72800000837 is an equidigital number, since it uses as much as digits as its factorization.

72800000837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 35.

The spelling of 72800000837 in words is "seventy-two billion, eight hundred million, eight hundred thirty-seven", and thus it is an aban number.