636141145819 has 2 divisors, whose sum is σ = 636141145820. Its totient is φ = 636141145818.

The previous prime is 636141145723. The next prime is 636141145831. The reversal of 636141145819 is 918541141636.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 636141145819 - 2¹³ = 636141137627 is a prime.

It is a super-2 number, since 2×636141145819² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (636141185819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318070572909 + 318070572910.

It is an arithmetic number, because the mean of its divisors is an integer number (318070572910).

Almost surely, 2^636141145819 is an apocalyptic number.

636141145819 is a deficient number, since it is larger than the sum of its proper divisors (1).

636141145819 is an equidigital number, since it uses as much as digits as its factorization.

636141145819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 49.

The spelling of 636141145819 in words is "six hundred thirty-six billion, one hundred forty-one million, one hundred forty-five thousand, eight hundred nineteen".