7982200857 has 4 divisors (see below), whose sum is σ = 10642934480. Its totient is φ = 5321467236.

The previous prime is 7982200829. The next prime is 7982200871. The reversal of 7982200857 is 7580022897.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7580022897 = 3 ⋅2526674299.

It is not a de Polignac number, because 7982200857 - 2⁸ = 7982200601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7982200157) 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, 1330366807 + ... + 1330366812.

It is an arithmetic number, because the mean of its divisors is an integer number (2660733620).

Almost surely, 2^7982200857 is an apocalyptic number.

It is an amenable number.

7982200857 is a deficient number, since it is larger than the sum of its proper divisors (2660733623).

7982200857 is a wasteful number, since it uses less digits than its factorization.

7982200857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660733622.

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 7982200857 is about 89343.1634597746. The cubic root of 7982200857 is about 1998.5156366887.

The spelling of 7982200857 in words is "seven billion, nine hundred eighty-two million, two hundred thousand, eight hundred fifty-seven".