221268493382904 has 64 divisors (see below), whose sum is σ = 670510586016000. Its totient is φ = 67051058600160.

The previous prime is 221268493382887. The next prime is 221268493382917. The reversal of 221268493382904 is 409283394862122.

221268493382904 is a `hidden beast` number, since 2 + 2 + 1 + 2 + 6 + 8 + 4 + 9 + 338 + 290 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46563232764 + ... + 46563237515.

It is an arithmetic number, because the mean of its divisors is an integer number (10476727906500).

Almost surely, 2^{221268493382904} is an apocalyptic number.

221268493382904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

221268493382904 is an abundant number, since it is smaller than the sum of its proper divisors (449242092633096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221268493382904 is a wasteful number, since it uses less digits than its factorization.

221268493382904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93126470305 (or 93126470295 counting only the distinct ones).

The product of its (nonzero) digits is 71663616, while the sum is 63.

The spelling of 221268493382904 in words is "two hundred twenty-one trillion, two hundred sixty-eight billion, four hundred ninety-three million, three hundred eighty-two thousand, nine hundred four".