420206644441 has 8 divisors (see below), whose sum is σ = 429327563904. Its totient is φ = 411093239760.

The previous prime is 420206644399. The next prime is 420206644447. The reversal of 420206644441 is 144446602024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420206644441 - 2¹¹ = 420206642393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420206644441.

It is not an unprimeable number, because it can be changed into a prime (420206644447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1765575 + ... + 1989388.

It is an arithmetic number, because the mean of its divisors is an integer number (53665945488).

Almost surely, 2^420206644441 is an apocalyptic number.

It is an amenable number.

420206644441 is a deficient number, since it is larger than the sum of its proper divisors (9120919463).

420206644441 is a wasteful number, since it uses less digits than its factorization.

420206644441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3757391.

The product of its (nonzero) digits is 147456, while the sum is 37.

The spelling of 420206644441 in words is "four hundred twenty billion, two hundred six million, six hundred forty-four thousand, four hundred forty-one".