83372637661 has 2 divisors, whose sum is σ = 83372637662. Its totient is φ = 83372637660.

The previous prime is 83372637637. The next prime is 83372637683. The reversal of 83372637661 is 16673627338.

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., 83351154436 + 21483225 = 288706^2 + 4635^2 .

It is a cyclic number.

It is not a de Polignac number, because 83372637661 - 2⁷ = 83372637533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83372637599 and 83372637608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83372637461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41686318830 + 41686318831.

It is an arithmetic number, because the mean of its divisors is an integer number (41686318831).

Almost surely, 2^83372637661 is an apocalyptic number.

It is an amenable number.

83372637661 is a deficient number, since it is larger than the sum of its proper divisors (1).

83372637661 is an equidigital number, since it uses as much as digits as its factorization.

83372637661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 52.

The spelling of 83372637661 in words is "eighty-three billion, three hundred seventy-two million, six hundred thirty-seven thousand, six hundred sixty-one".