421516350040566 has 32 divisors (see below), whose sum is σ = 919681154770176. Its totient is φ = 127730960852000.

The previous prime is 421516350040537. The next prime is 421516350040693. The reversal of 421516350040566 is 665040053615124.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24942930 + ... + 38277701.

It is an arithmetic number, because the mean of its divisors is an integer number (28740036086568).

Almost surely, 2^{421516350040566} is an apocalyptic number.

421516350040566 is an abundant number, since it is smaller than the sum of its proper divisors (498164804729610).

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

421516350040566 is a wasteful number, since it uses less digits than its factorization.

421516350040566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63321668.

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 421516350040566 in words is "four hundred twenty-one trillion, five hundred sixteen billion, three hundred fifty million, forty thousand, five hundred sixty-six".