8168434044641 has 16 divisors (see below), whose sum is σ = 9565968507984. Its totient is φ = 6904759209984.

The previous prime is 8168434044599. The next prime is 8168434044677. The reversal of 8168434044641 is 1464404348618.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 206465728225 + 7961968316416 = 454385^2 + 2821696^2 .

It is a cyclic number.

It is not a de Polignac number, because 8168434044641 - 2¹⁸ = 8168433782497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8168434044041) 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, 499468040 + ... + 499484393.

It is an arithmetic number, because the mean of its divisors is an integer number (597873031749).

Almost surely, 2^{8168434044641} is an apocalyptic number.

It is an amenable number.

8168434044641 is a deficient number, since it is larger than the sum of its proper divisors (1397534463343).

8168434044641 is a wasteful number, since it uses less digits than its factorization.

8168434044641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998952500.

The product of its (nonzero) digits is 7077888, while the sum is 53.

The spelling of 8168434044641 in words is "eight trillion, one hundred sixty-eight billion, four hundred thirty-four million, forty-four thousand, six hundred forty-one".