420336316881 has 24 divisors (see below), whose sum is σ = 653991123240. Its totient is φ = 258615242496.

The previous prime is 420336316879. The next prime is 420336316919. The reversal of 420336316881 is 188613633024.

420336316881 is a `hidden beast` number, since 4 + 2 + 0 + 3 + 3 + 631 + 6 + 8 + 8 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 95846587281 + 324489729600 = 309591^2 + 569640^2 .

It is not a de Polignac number, because 420336316881 - 2¹ = 420336316879 is a prime.

It is a super-2 number, since 2×420336316881² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420336316831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 204595 + ... + 939431.

It is an arithmetic number, because the mean of its divisors is an integer number (27249630135).

Almost surely, 2^420336316881 is an apocalyptic number.

It is an amenable number.

420336316881 is a deficient number, since it is larger than the sum of its proper divisors (233654806359).

420336316881 is a wasteful number, since it uses less digits than its factorization.

420336316881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739745 (or 739742 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 420336316881 in words is "four hundred twenty billion, three hundred thirty-six million, three hundred sixteen thousand, eight hundred eighty-one".