421754320711768 has 64 divisors (see below), whose sum is σ = 865161823173120. Its totient is φ = 191155037616000.

The previous prime is 421754320711753. The next prime is 421754320711769. The reversal of 421754320711768 is 867117023457124.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421754320711769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166374193 + ... + 168890143.

It is an arithmetic number, because the mean of its divisors is an integer number (13518153487080).

Almost surely, 2^{421754320711768} is an apocalyptic number.

It is an amenable number.

421754320711768 is an abundant number, since it is smaller than the sum of its proper divisors (443407502461352).

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

421754320711768 is a wasteful number, since it uses less digits than its factorization.

421754320711768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521448 (or 2521444 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 58.

The spelling of 421754320711768 in words is "four hundred twenty-one trillion, seven hundred fifty-four billion, three hundred twenty million, seven hundred eleven thousand, seven hundred sixty-eight".