83945892257 has 4 divisors (see below), whose sum is σ = 83948438340. Its totient is φ = 83943346176.

The previous prime is 83945892229. The next prime is 83945892287. The reversal of 83945892257 is 75229854938.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37518140416 + 46427751841 = 193696^2 + 215471^2 .

It is a cyclic number.

It is not a de Polignac number, because 83945892257 - 2⁸ = 83945892001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83945892257.

It is not an unprimeable number, because it can be changed into a prime (83945892287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1222928 + ... + 1289745.

It is an arithmetic number, because the mean of its divisors is an integer number (20987109585).

Almost surely, 2^83945892257 is an apocalyptic number.

It is an amenable number.

83945892257 is a deficient number, since it is larger than the sum of its proper divisors (2546083).

83945892257 is a wasteful number, since it uses less digits than its factorization.

83945892257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2546082.

The product of its digits is 43545600, while the sum is 62.

The spelling of 83945892257 in words is "eighty-three billion, nine hundred forty-five million, eight hundred ninety-two thousand, two hundred fifty-seven".