83680788487 has 2 divisors, whose sum is σ = 83680788488. Its totient is φ = 83680788486.

The previous prime is 83680788449. The next prime is 83680788497. The reversal of 83680788487 is 78488708638.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83680788487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83680788497) 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, 41840394243 + 41840394244.

It is an arithmetic number, because the mean of its divisors is an integer number (41840394244).

Almost surely, 2^83680788487 is an apocalyptic number.

83680788487 is a deficient number, since it is larger than the sum of its proper divisors (1).

83680788487 is an equidigital number, since it uses as much as digits as its factorization.

83680788487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115605504, while the sum is 67.

The spelling of 83680788487 in words is "eighty-three billion, six hundred eighty million, seven hundred eighty-eight thousand, four hundred eighty-seven".