5645601979 has 2 divisors, whose sum is σ = 5645601980. Its totient is φ = 5645601978.

The previous prime is 5645601953. The next prime is 5645602009. The reversal of 5645601979 is 9791065465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5645601979 - 2⁵ = 5645601947 is a prime.

It is not a weakly prime, because it can be changed into another prime (5645001979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822800989 + 2822800990.

It is an arithmetic number, because the mean of its divisors is an integer number (2822800990).

Almost surely, 2^5645601979 is an apocalyptic number.

5645601979 is a deficient number, since it is larger than the sum of its proper divisors (1).

5645601979 is an equidigital number, since it uses as much as digits as its factorization.

5645601979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2041200, while the sum is 52.

The square root of 5645601979 is about 75137.2209959884. The cubic root of 5645601979 is about 1780.6152377103.

The spelling of 5645601979 in words is "five billion, six hundred forty-five million, six hundred one thousand, nine hundred seventy-nine".