646582196265 has 16 divisors (see below), whose sum is σ = 1034786988096. Its totient is φ = 344758680000.

The previous prime is 646582196261. The next prime is 646582196321. The reversal of 646582196265 is 562691285646.

It is not a de Polignac number, because 646582196265 - 2² = 646582196261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 646582196199 and 646582196208.

It is not an unprimeable number, because it can be changed into a prime (646582196261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5259586 + ... + 5381115.

It is an arithmetic number, because the mean of its divisors is an integer number (64674186756).

Almost surely, 2^646582196265 is an apocalyptic number.

It is an amenable number.

646582196265 is a deficient number, since it is larger than the sum of its proper divisors (388204791831).

646582196265 is a wasteful number, since it uses less digits than its factorization.

646582196265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10644760.

The product of its digits is 37324800, while the sum is 60.

The spelling of 646582196265 in words is "six hundred forty-six billion, five hundred eighty-two million, one hundred ninety-six thousand, two hundred sixty-five".