5405123161 has 2 divisors, whose sum is σ = 5405123162. Its totient is φ = 5405123160.

The previous prime is 5405123147. The next prime is 5405123167. The reversal of 5405123161 is 1613215045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5393433600 + 11689561 = 73440^2 + 3419^2 .

It is a cyclic number.

It is not a de Polignac number, because 5405123161 - 2⁷ = 5405123033 is a prime.

It is not a weakly prime, because it can be changed into another prime (5405123167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2702561580 + 2702561581.

It is an arithmetic number, because the mean of its divisors is an integer number (2702561581).

Almost surely, 2^5405123161 is an apocalyptic number.

It is an amenable number.

5405123161 is a deficient number, since it is larger than the sum of its proper divisors (1).

5405123161 is an equidigital number, since it uses as much as digits as its factorization.

5405123161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 5405123161 is about 73519.5427148456. The cubic root of 5405123161 is about 1754.9652902879.

The spelling of 5405123161 in words is "five billion, four hundred five million, one hundred twenty-three thousand, one hundred sixty-one".