421165665110 has 16 divisors (see below), whose sum is σ = 758247491232. Its totient is φ = 168433089600.

The previous prime is 421165665103. The next prime is 421165665127. The reversal of 421165665110 is 11566561124.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4093706 + ... + 4195325.

It is an arithmetic number, because the mean of its divisors is an integer number (47390468202).

Almost surely, 2^421165665110 is an apocalyptic number.

421165665110 is a deficient number, since it is larger than the sum of its proper divisors (337081826122).

421165665110 is a wasteful number, since it uses less digits than its factorization.

421165665110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8294119.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 421165665110 in words is "four hundred twenty-one billion, one hundred sixty-five million, six hundred sixty-five thousand, one hundred ten".