4643222661857 has 4 divisors (see below), whose sum is σ = 5000393635860. Its totient is φ = 4286051687856.

The previous prime is 4643222661839. The next prime is 4643222661877. The reversal of 4643222661857 is 7581662223464.

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 641498476096 + 4001724185761 = 800936^2 + 2000431^2 .

It is a cyclic number.

It is not a de Polignac number, because 4643222661857 - 2⁶ = 4643222661793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4643222661877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178585486982 + ... + 178585487007.

It is an arithmetic number, because the mean of its divisors is an integer number (1250098408965).

Almost surely, 2^{4643222661857} is an apocalyptic number.

It is an amenable number.

4643222661857 is a deficient number, since it is larger than the sum of its proper divisors (357170974003).

4643222661857 is a wasteful number, since it uses less digits than its factorization.

4643222661857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357170974002.

The product of its digits is 23224320, while the sum is 56.

The spelling of 4643222661857 in words is "four trillion, six hundred forty-three billion, two hundred twenty-two million, six hundred sixty-one thousand, eight hundred fifty-seven".