646243330011057 has 6 divisors (see below), whose sum is σ = 933462587793762. Its totient is φ = 430828886674032.

The previous prime is 646243330011049. The next prime is 646243330011079. The reversal of 646243330011057 is 750110033342646.

646243330011057 is a `hidden beast` number, since 6 + 4 + 624 + 3 + 3 + 3 + 0 + 0 + 1 + 10 + 5 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 645092996539761 + 1150333471296 = 25398681^2 + 1072536^2 .

It is not a de Polignac number, because 646243330011057 - 2³ = 646243330011049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (646243330011007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35902407222828 + ... + 35902407222845.

It is an arithmetic number, because the mean of its divisors is an integer number (155577097965627).

Almost surely, 2^{646243330011057} is an apocalyptic number.

It is an amenable number.

646243330011057 is a deficient number, since it is larger than the sum of its proper divisors (287219257782705).

646243330011057 is a wasteful number, since it uses less digits than its factorization.

646243330011057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71804814445679 (or 71804814445676 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 646243330011057 in words is "six hundred forty-six trillion, two hundred forty-three billion, three hundred thirty million, eleven thousand, fifty-seven".