268221973838 has 32 divisors (see below), whose sum is σ = 496322774976. Its totient is φ = 105864703488.

The previous prime is 268221973837. The next prime is 268221973843. The reversal of 268221973838 is 838379122862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268221973837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1622981 + ... + 1780592.

It is an arithmetic number, because the mean of its divisors is an integer number (15510086718).

Almost surely, 2^268221973838 is an apocalyptic number.

268221973838 is a deficient number, since it is larger than the sum of its proper divisors (228100801138).

268221973838 is a wasteful number, since it uses less digits than its factorization.

268221973838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3404028.

The product of its digits is 13934592, while the sum is 59.

The spelling of 268221973838 in words is "two hundred sixty-eight billion, two hundred twenty-one million, nine hundred seventy-three thousand, eight hundred thirty-eight".