638047762003 has 4 divisors (see below), whose sum is σ = 638051620360. Its totient is φ = 638043903648.

The previous prime is 638047761979. The next prime is 638047762057. The reversal of 638047762003 is 300267740836.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-638047762003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (638047562003) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1669473 + ... + 2015746.

It is an arithmetic number, because the mean of its divisors is an integer number (159512905090).

Almost surely, 2^638047762003 is an apocalyptic number.

638047762003 is a deficient number, since it is larger than the sum of its proper divisors (3858357).

638047762003 is a wasteful number, since it uses less digits than its factorization.

638047762003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3858356.

The product of its (nonzero) digits is 1016064, while the sum is 46.

The spelling of 638047762003 in words is "six hundred thirty-eight billion, forty-seven million, seven hundred sixty-two thousand, three".