421754320711836 has 72 divisors (see below), whose sum is σ = 1229579365254240. Its totient is φ = 119395718568576.

The previous prime is 421754320711769. The next prime is 421754320711837. The reversal of 421754320711836 is 638117023457124.

421754320711836 is a `hidden beast` number, since 4 + 2 + 1 + 7 + 543 + 2 + 0 + 7 + 11 + 83 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421754320711837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7677166371 + ... + 7677221306.

Almost surely, 2^{421754320711836} is an apocalyptic number.

It is an amenable number.

421754320711836 is an abundant number, since it is smaller than the sum of its proper divisors (807825044542404).

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

421754320711836 is a wasteful number, since it uses less digits than its factorization.

421754320711836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15354387803 (or 15354387798 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 421754320711836 in words is "four hundred twenty-one trillion, seven hundred fifty-four billion, three hundred twenty million, seven hundred eleven thousand, eight hundred thirty-six".