420350228861 has 12 divisors (see below), whose sum is σ = 441244395900. Its totient is φ = 400405653120.

The previous prime is 420350228813. The next prime is 420350228869. The reversal of 420350228861 is 168822053024.

It can be written as a sum of positive squares in 2 ways, for example, as 159755293636 + 260594935225 = 399694^2 + 510485^2 .

It is not a de Polignac number, because 420350228861 - 2⁶ = 420350228797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420350228869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1521086 + ... + 1776063.

It is an arithmetic number, because the mean of its divisors is an integer number (36770366325).

Almost surely, 2^420350228861 is an apocalyptic number.

It is an amenable number.

420350228861 is a deficient number, since it is larger than the sum of its proper divisors (20894167039).

420350228861 is a wasteful number, since it uses less digits than its factorization.

420350228861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3297436 (or 3297413 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 420350228861 in words is "four hundred twenty billion, three hundred fifty million, two hundred twenty-eight thousand, eight hundred sixty-one".