638007372803 has 16 divisors (see below), whose sum is σ = 676304819424. Its totient is φ = 599795642880.

The previous prime is 638007372787. The next prime is 638007372829. The reversal of 638007372803 is 308273700836.

It is a happy number.

It is not a de Polignac number, because 638007372803 - 2⁴ = 638007372787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (638007372883) 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, 69669701 + ... + 69678857.

It is an arithmetic number, because the mean of its divisors is an integer number (42269051214).

Almost surely, 2^638007372803 is an apocalyptic number.

638007372803 is a deficient number, since it is larger than the sum of its proper divisors (38297446621).

638007372803 is a wasteful number, since it uses less digits than its factorization.

638007372803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13382.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The spelling of 638007372803 in words is "six hundred thirty-eight billion, seven million, three hundred seventy-two thousand, eight hundred three".