83757239009 has 2 divisors, whose sum is σ = 83757239010. Its totient is φ = 83757239008.

The previous prime is 83757238993. The next prime is 83757239077. The reversal of 83757239009 is 90093275738.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63847182400 + 19910056609 = 252680^2 + 141103^2 .

It is a cyclic number.

It is not a de Polignac number, because 83757239009 - 2⁴ = 83757238993 is a prime.

It is not a weakly prime, because it can be changed into another prime (83757239509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41878619504 + 41878619505.

It is an arithmetic number, because the mean of its divisors is an integer number (41878619505).

Almost surely, 2^83757239009 is an apocalyptic number.

It is an amenable number.

83757239009 is a deficient number, since it is larger than the sum of its proper divisors (1).

83757239009 is an equidigital number, since it uses as much as digits as its factorization.

83757239009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 53.

The spelling of 83757239009 in words is "eighty-three billion, seven hundred fifty-seven million, two hundred thirty-nine thousand, nine".