5177678161 has 2 divisors, whose sum is σ = 5177678162. Its totient is φ = 5177678160.

The previous prime is 5177678111. The next prime is 5177678167. The reversal of 5177678161 is 1618767715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4307428161 + 870250000 = 65631^2 + 29500^2 .

It is a cyclic number.

It is not a de Polignac number, because 5177678161 - 2⁹ = 5177677649 is a prime.

It is a super-2 number, since 2×5177678161² = 53616702277792683842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5177678167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2588839080 + 2588839081.

It is an arithmetic number, because the mean of its divisors is an integer number (2588839081).

Almost surely, 2^5177678161 is an apocalyptic number.

It is an amenable number.

5177678161 is a deficient number, since it is larger than the sum of its proper divisors (1).

5177678161 is an equidigital number, since it uses as much as digits as its factorization.

5177678161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 493920, while the sum is 49.

The square root of 5177678161 is about 71956.0849476957. The cubic root of 5177678161 is about 1729.9956743073.

The spelling of 5177678161 in words is "five billion, one hundred seventy-seven million, six hundred seventy-eight thousand, one hundred sixty-one".