83981175697 has 2 divisors, whose sum is σ = 83981175698. Its totient is φ = 83981175696.

The previous prime is 83981175653. The next prime is 83981175743. The reversal of 83981175697 is 79657118938.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82865682496 + 1115493201 = 287864^2 + 33399^2 .

It is a cyclic number.

It is not a de Polignac number, because 83981175697 - 2¹⁹ = 83980651409 is a prime.

It is not a weakly prime, because it can be changed into another prime (83981175647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41990587848 + 41990587849.

It is an arithmetic number, because the mean of its divisors is an integer number (41990587849).

Almost surely, 2^83981175697 is an apocalyptic number.

It is an amenable number.

83981175697 is a deficient number, since it is larger than the sum of its proper divisors (1).

83981175697 is an equidigital number, since it uses as much as digits as its factorization.

83981175697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22861440, while the sum is 64.

The spelling of 83981175697 in words is "eighty-three billion, nine hundred eighty-one million, one hundred seventy-five thousand, six hundred ninety-seven".