221755153808 has 40 divisors (see below), whose sum is σ = 441081102336. Its totient is φ = 107939462400.

The previous prime is 221755153769. The next prime is 221755153819. The reversal of 221755153808 is 808351557122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61328 + ... + 668783.

Almost surely, 2^221755153808 is an apocalyptic number.

It is an amenable number.

221755153808 is a deficient number, since it is larger than the sum of its proper divisors (219325948528).

221755153808 is a wasteful number, since it uses less digits than its factorization.

221755153808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730623 (or 730617 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 47.

The spelling of 221755153808 in words is "two hundred twenty-one billion, seven hundred fifty-five million, one hundred fifty-three thousand, eight hundred eight".