83918455842897 has 36 divisors (see below), whose sum is σ = 131258321455404. Its totient is φ = 51641635069440.

The previous prime is 83918455842857. The next prime is 83918455842917. The reversal of 83918455842897 is 79824855481938.

It is a happy number.

83918455842897 is a `hidden beast` number, since 8 + 3 + 9 + 1 + 8 + 4 + 5 + 584 + 28 + 9 + 7 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 4337622628416 + 79580833214481 = 2082696^2 + 8920809^2 .

It is not a de Polignac number, because 83918455842897 - 2¹⁰ = 83918455841873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83918455842857) 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 in 35 ways as a sum of consecutive naturals, for example, 220624197 + ... + 221004237.

Almost surely, 2^{83918455842897} is an apocalyptic number.

It is an amenable number.

83918455842897 is a deficient number, since it is larger than the sum of its proper divisors (47339865612507).

83918455842897 is a wasteful number, since it uses less digits than its factorization.

83918455842897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525250 (or 525234 counting only the distinct ones).

The product of its digits is 5573836800, while the sum is 81.

The spelling of 83918455842897 in words is "eighty-three trillion, nine hundred eighteen billion, four hundred fifty-five million, eight hundred forty-two thousand, eight hundred ninety-seven".