638576060740 has 48 divisors (see below), whose sum is σ = 1354217679360. Its totient is φ = 252915315840.

The previous prime is 638576060737. The next prime is 638576060743. The reversal of 638576060740 is 47060675836.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (638576060737) and next prime (638576060743).

It is not an unprimeable number, because it can be changed into a prime (638576060743) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 18747525 + ... + 18781555.

It is an arithmetic number, because the mean of its divisors is an integer number (28212868320).

Almost surely, 2^638576060740 is an apocalyptic number.

It is an amenable number.

638576060740 is an abundant number, since it is smaller than the sum of its proper divisors (715641618620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

638576060740 is a wasteful number, since it uses less digits than its factorization.

638576060740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43252 (or 43250 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 52.

The spelling of 638576060740 in words is "six hundred thirty-eight billion, five hundred seventy-six million, sixty thousand, seven hundred forty".