5778166523 has 2 divisors, whose sum is σ = 5778166524. Its totient is φ = 5778166522.

The previous prime is 5778166507. The next prime is 5778166543. The reversal of 5778166523 is 3256618775.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5778166523 - 2⁴ = 5778166507 is a prime.

It is not a weakly prime, because it can be changed into another prime (5778166543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2889083261 + 2889083262.

It is an arithmetic number, because the mean of its divisors is an integer number (2889083262).

Almost surely, 2^5778166523 is an apocalyptic number.

5778166523 is a deficient number, since it is larger than the sum of its proper divisors (1).

5778166523 is an equidigital number, since it uses as much as digits as its factorization.

5778166523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2116800, while the sum is 50.

The square root of 5778166523 is about 76014.2521044574. The cubic root of 5778166523 is about 1794.4444473224. Note that the first 5 decimals are identical.

The spelling of 5778166523 in words is "five billion, seven hundred seventy-eight million, one hundred sixty-six thousand, five hundred twenty-three".