221680975435 has 8 divisors (see below), whose sum is σ = 266546034720. Its totient is φ = 176992204224.

The previous prime is 221680975367. The next prime is 221680975487. The reversal of 221680975435 is 534579086122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221680975435 - 2²¹ = 221678878283 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44069250 + ... + 44074279.

It is an arithmetic number, because the mean of its divisors is an integer number (33318254340).

It is a 1-persistent number, because it is pandigital, but 2⋅221680975435 = 443361950870 is not.

Almost surely, 2^221680975435 is an apocalyptic number.

221680975435 is a deficient number, since it is larger than the sum of its proper divisors (44865059285).

221680975435 is an equidigital number, since it uses as much as digits as its factorization.

221680975435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88144037.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 221680975435 in words is "two hundred twenty-one billion, six hundred eighty million, nine hundred seventy-five thousand, four hundred thirty-five".