638662142703 has 64 divisors (see below), whose sum is σ = 952255180800. Its totient is φ = 378042094080.

The previous prime is 638662142641. The next prime is 638662142707. The reversal of 638662142703 is 307241266836.

It is not a de Polignac number, because 638662142703 - 2¹⁰ = 638662141679 is a prime.

It is a super-2 number, since 2×638662142703² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638662142707) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 518815098 + ... + 518816328.

It is an arithmetic number, because the mean of its divisors is an integer number (14878987200).

Almost surely, 2^638662142703 is an apocalyptic number.

638662142703 is a deficient number, since it is larger than the sum of its proper divisors (313593038097).

638662142703 is a wasteful number, since it uses less digits than its factorization.

638662142703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2632.

The product of its (nonzero) digits is 1741824, while the sum is 48.

The spelling of 638662142703 in words is "six hundred thirty-eight billion, six hundred sixty-two million, one hundred forty-two thousand, seven hundred three".