638351583101 has 8 divisors (see below), whose sum is σ = 638638117824. Its totient is φ = 638065118880.

The previous prime is 638351583071. The next prime is 638351583127. The reversal of 638351583101 is 101385153836.

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

It is a cyclic number.

It is not a de Polignac number, because 638351583101 - 2³⁸ = 363473676157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638351583131) 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 7 ways as a sum of consecutive naturals, for example, 25834985 + ... + 25859681.

It is an arithmetic number, because the mean of its divisors is an integer number (79829764728).

Almost surely, 2^638351583101 is an apocalyptic number.

It is an amenable number.

638351583101 is a deficient number, since it is larger than the sum of its proper divisors (286534723).

638351583101 is a wasteful number, since it uses less digits than its factorization.

638351583101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35251.

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 638351583101 in words is "six hundred thirty-eight billion, three hundred fifty-one million, five hundred eighty-three thousand, one hundred one".