638583223202 has 8 divisors (see below), whose sum is σ = 958086908316. Its totient is φ = 319220920432.

The previous prime is 638583223193. The next prime is 638583223211. The reversal of 638583223202 is 202322385836.

It is an interprime number because it is at equal distance from previous prime (638583223193) and next prime (638583223211).

It can be written as a sum of positive squares in 2 ways, for example, as 578650797481 + 59932425721 = 760691^2 + 244811^2 .

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

It is a super-2 number, since 2×638583223202² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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, 35334293 + ... + 35352360.

Almost surely, 2^638583223202 is an apocalyptic number.

638583223202 is a deficient number, since it is larger than the sum of its proper divisors (319503685114).

638583223202 is a wasteful number, since it uses less digits than its factorization.

638583223202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70691172.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 638583223202 in words is "six hundred thirty-eight billion, five hundred eighty-three million, two hundred twenty-three thousand, two hundred two".