2427678161 has 2 divisors, whose sum is σ = 2427678162. Its totient is φ = 2427678160.

The previous prime is 2427678139. The next prime is 2427678179. The reversal of 2427678161 is 1618767242.

2427678161 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., 2377537600 + 50140561 = 48760^2 + 7081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2427678161 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2427678181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1213839080 + 1213839081.

It is an arithmetic number, because the mean of its divisors is an integer number (1213839081).

Almost surely, 2^2427678161 is an apocalyptic number.

It is an amenable number.

2427678161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2427678161 is an equidigital number, since it uses as much as digits as its factorization.

2427678161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 44.

The square root of 2427678161 is about 49271.4741102801. The cubic root of 2427678161 is about 1343.9930940880.

The spelling of 2427678161 in words is "two billion, four hundred twenty-seven million, six hundred seventy-eight thousand, one hundred sixty-one".