82063748857 has 4 divisors (see below), whose sum is σ = 82071282340. Its totient is φ = 82056215376.

The previous prime is 82063748827. The next prime is 82063748947. The reversal of 82063748857 is 75884736028.

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 11592613561 + 70471135296 = 107669^2 + 265464^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82063748857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82063748827) 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, 3750378 + ... + 3772195.

It is an arithmetic number, because the mean of its divisors is an integer number (20517820585).

Almost surely, 2^82063748857 is an apocalyptic number.

It is an amenable number.

82063748857 is a deficient number, since it is larger than the sum of its proper divisors (7533483).

82063748857 is a wasteful number, since it uses less digits than its factorization.

82063748857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7533482.

The product of its (nonzero) digits is 18063360, while the sum is 58.

The spelling of 82063748857 in words is "eighty-two billion, sixty-three million, seven hundred forty-eight thousand, eight hundred fifty-seven".