82988000561 has 2 divisors, whose sum is σ = 82988000562. Its totient is φ = 82988000560.

The previous prime is 82988000507. The next prime is 82988000567. The reversal of 82988000561 is 16500088928.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50904384400 + 32083616161 = 225620^2 + 179119^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82988000561 is a prime.

It is a super-2 number, since 2×82988000561² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82988000567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41494000280 + 41494000281.

It is an arithmetic number, because the mean of its divisors is an integer number (41494000281).

Almost surely, 2^82988000561 is an apocalyptic number.

It is an amenable number.

82988000561 is a deficient number, since it is larger than the sum of its proper divisors (1).

82988000561 is an equidigital number, since it uses as much as digits as its factorization.

82988000561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 47.

The spelling of 82988000561 in words is "eighty-two billion, nine hundred eighty-eight million, five hundred sixty-one", and thus it is an aban number.