664465377444034 has 4 divisors (see below), whose sum is σ = 996698066166054. Its totient is φ = 332232688722016.

The previous prime is 664465377444023. The next prime is 664465377444053. The reversal of 664465377444034 is 430444773564466.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 660165962753025 + 4299414691009 = 25693695^2 + 2073503^2 .

It is an unprimeable number.

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, 166116344361007 + ... + 166116344361010.

Almost surely, 2^{664465377444034} is an apocalyptic number.

664465377444034 is a deficient number, since it is larger than the sum of its proper divisors (332232688722020).

664465377444034 is a wasteful number, since it uses less digits than its factorization.

664465377444034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332232688722019.

The product of its (nonzero) digits is 1950842880, while the sum is 67.

The spelling of 664465377444034 in words is "six hundred sixty-four trillion, four hundred sixty-five billion, three hundred seventy-seven million, four hundred forty-four thousand, thirty-four".