638833827082 has 16 divisors (see below), whose sum is σ = 1081411495200. Its totient is φ = 280365942640.

The previous prime is 638833827067. The next prime is 638833827083. The reversal of 638833827082 is 280728338836.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is not an unprimeable number, because it can be changed into a prime (638833827083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500652832 + ... + 500654107.

It is an arithmetic number, because the mean of its divisors is an integer number (67588218450).

Almost surely, 2^638833827082 is an apocalyptic number.

638833827082 is a deficient number, since it is larger than the sum of its proper divisors (442577668118).

638833827082 is a wasteful number, since it uses less digits than its factorization.

638833827082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001306981.

The product of its (nonzero) digits is 18579456, while the sum is 58.

The spelling of 638833827082 in words is "six hundred thirty-eight billion, eight hundred thirty-three million, eight hundred twenty-seven thousand, eighty-two".