638372773322 has 32 divisors (see below), whose sum is σ = 986659869888. Its totient is φ = 309582000000.

The previous prime is 638372773301. The next prime is 638372773327. The reversal of 638372773322 is 223377273836.

It is not an unprimeable number, because it can be changed into a prime (638372773327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11106197 + ... + 11163527.

It is an arithmetic number, because the mean of its divisors is an integer number (30833120934).

Almost surely, 2^638372773322 is an apocalyptic number.

638372773322 is a deficient number, since it is larger than the sum of its proper divisors (348287096566).

638372773322 is a wasteful number, since it uses less digits than its factorization.

638372773322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58166.

The product of its digits is 10668672, while the sum is 53.

The spelling of 638372773322 in words is "six hundred thirty-eight billion, three hundred seventy-two million, seven hundred seventy-three thousand, three hundred twenty-two".