4156643377 has 2 divisors, whose sum is σ = 4156643378. Its totient is φ = 4156643376.

The previous prime is 4156643353. The next prime is 4156643389. The reversal of 4156643377 is 7733466514.

4156643377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3077586576 + 1079056801 = 55476^2 + 32849^2 .

It is a cyclic number.

It is not a de Polignac number, because 4156643377 - 2¹⁹ = 4156119089 is a prime.

It is not a weakly prime, because it can be changed into another prime (4156643317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2078321688 + 2078321689.

It is an arithmetic number, because the mean of its divisors is an integer number (2078321689).

Almost surely, 2^4156643377 is an apocalyptic number.

It is an amenable number.

4156643377 is a deficient number, since it is larger than the sum of its proper divisors (1).

4156643377 is an equidigital number, since it uses as much as digits as its factorization.

4156643377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 46.

The square root of 4156643377 is about 64472.0356201043. The cubic root of 4156643377 is about 1607.8576209969.

The spelling of 4156643377 in words is "four billion, one hundred fifty-six million, six hundred forty-three thousand, three hundred seventy-seven".