420232500081 has 24 divisors (see below), whose sum is σ = 621349397760. Its totient is φ = 273560893056.

The previous prime is 420232500047. The next prime is 420232500091. The reversal of 420232500081 is 180005232024.

420232500081 is a `hidden beast` number, since 420 + 232 + 5 + 0 + 0 + 0 + 8 + 1 = 666.

It is not a de Polignac number, because 420232500081 - 2⁹ = 420232499569 is a prime.

It is a super-3 number, since 3×420232500081³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (420232500091) 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, 964021 + ... + 1330338.

It is an arithmetic number, because the mean of its divisors is an integer number (25889558240).

Almost surely, 2^420232500081 is an apocalyptic number.

It is an amenable number.

420232500081 is a deficient number, since it is larger than the sum of its proper divisors (201116897679).

420232500081 is a wasteful number, since it uses less digits than its factorization.

420232500081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294845 (or 2294842 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The spelling of 420232500081 in words is "four hundred twenty billion, two hundred thirty-two million, five hundred thousand, eighty-one".