638580754034 has 8 divisors (see below), whose sum is σ = 963222366960. Its totient is φ = 317506631716.

The previous prime is 638580754027. The next prime is 638580754067. The reversal of 638580754034 is 430457085836.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891872204 + ... + 891872919.

It is an arithmetic number, because the mean of its divisors is an integer number (120402795870).

Almost surely, 2^638580754034 is an apocalyptic number.

638580754034 is a deficient number, since it is larger than the sum of its proper divisors (324641612926).

638580754034 is a wasteful number, since it uses less digits than its factorization.

638580754034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783745304.

The product of its (nonzero) digits is 9676800, while the sum is 53.

The spelling of 638580754034 in words is "six hundred thirty-eight billion, five hundred eighty million, seven hundred fifty-four thousand, thirty-four".