634445343544436 has 18 divisors (see below), whose sum is σ = 1121843531991798. Its totient is φ = 313952334931200.

The previous prime is 634445343544423. The next prime is 634445343544451.

634445343544436 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 3 ways, for example, as 72814307596900 + 561631035947536 = 8533130^2 + 23698756^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8428665515 + ... + 8428740786.

It is an arithmetic number, because the mean of its divisors is an integer number (62324640666211).

Almost surely, 2^{634445343544436} is an apocalyptic number.

It is an amenable number.

634445343544436 is a deficient number, since it is larger than the sum of its proper divisors (487398188447362).

634445343544436 is a wasteful number, since it uses less digits than its factorization.

634445343544436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16857406499 (or 16857406400 counting only the distinct ones).

The product of its digits is 1194393600, while the sum is 62.

The spelling of 634445343544436 in words is "six hundred thirty-four trillion, four hundred forty-five billion, three hundred forty-three million, five hundred forty-four thousand, four hundred thirty-six".