221637512653046 has 16 divisors (see below), whose sum is σ = 380575969022976. Its totient is φ = 94831018589736.

The previous prime is 221637512653021. The next prime is 221637512653147. The reversal of 221637512653046 is 640356215736122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13040560616 + ... + 13040577611.

It is an arithmetic number, because the mean of its divisors is an integer number (23785998063936).

Almost surely, 2^{221637512653046} is an apocalyptic number.

221637512653046 is a deficient number, since it is larger than the sum of its proper divisors (158938456369930).

221637512653046 is a wasteful number, since it uses less digits than its factorization.

221637512653046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26081138843.

The product of its (nonzero) digits is 10886400, while the sum is 53.

The spelling of 221637512653046 in words is "two hundred twenty-one trillion, six hundred thirty-seven billion, five hundred twelve million, six hundred fifty-three thousand, forty-six".