83771984086597 has 2 divisors, whose sum is σ = 83771984086598. Its totient is φ = 83771984086596.

The previous prime is 83771984086519. The next prime is 83771984086669. The reversal of 83771984086597 is 79568048917738.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83479634084961 + 292350001636 = 9136719^2 + 540694^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83771984086597 is a prime.

It is a super-2 number, since 2×83771984086597² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 83771984086597.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83771984086097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41885992043298 + 41885992043299.

It is an arithmetic number, because the mean of its divisors is an integer number (41885992043299).

Almost surely, 2^{83771984086597} is an apocalyptic number.

It is an amenable number.

83771984086597 is a deficient number, since it is larger than the sum of its proper divisors (1).

83771984086597 is an equidigital number, since it uses as much as digits as its factorization.

83771984086597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5120962560, while the sum is 82.

The spelling of 83771984086597 in words is "eighty-three trillion, seven hundred seventy-one billion, nine hundred eighty-four million, eighty-six thousand, five hundred ninety-seven".