221637450056006 has 64 divisors (see below), whose sum is σ = 363679769370816. Its totient is φ = 100899002880000.

The previous prime is 221637450055997. The next prime is 221637450056027. The reversal of 221637450056006 is 600650054736122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 427396916 + ... + 427915176.

It is an arithmetic number, because the mean of its divisors is an integer number (5682496396419).

Almost surely, 2^{221637450056006} is an apocalyptic number.

221637450056006 is a deficient number, since it is larger than the sum of its proper divisors (142042319314810).

221637450056006 is a wasteful number, since it uses less digits than its factorization.

221637450056006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521657.

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 221637450056006 in words is "two hundred twenty-one trillion, six hundred thirty-seven billion, four hundred fifty million, fifty-six thousand, six".