221745588106434 has 64 divisors (see below), whose sum is σ = 509176113438720. Its totient is φ = 63064813178880.

The previous prime is 221745588106411. The next prime is 221745588106463. The reversal of 221745588106434 is 434601885547122.

It is a super-2 number, since 2×221745588106434² (a number of 29 digits) contains 22 as substring.

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, 83844162 + ... + 86448450.

It is an arithmetic number, because the mean of its divisors is an integer number (7955876772480).

Almost surely, 2^{221745588106434} is an apocalyptic number.

221745588106434 is an abundant number, since it is smaller than the sum of its proper divisors (287430525332286).

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

221745588106434 is a wasteful number, since it uses less digits than its factorization.

221745588106434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613615.

The product of its (nonzero) digits is 51609600, while the sum is 60.

The spelling of 221745588106434 in words is "two hundred twenty-one trillion, seven hundred forty-five billion, five hundred eighty-eight million, one hundred six thousand, four hundred thirty-four".