420049865643 has 4 divisors (see below), whose sum is σ = 560066487528. Its totient is φ = 280033243760.

The previous prime is 420049865621. The next prime is 420049865657. The reversal of 420049865643 is 346568940024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420049865643 - 2⁵ = 420049865611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420049865663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70008310938 + ... + 70008310943.

It is an arithmetic number, because the mean of its divisors is an integer number (140016621882).

Almost surely, 2^420049865643 is an apocalyptic number.

420049865643 is a deficient number, since it is larger than the sum of its proper divisors (140016621885).

420049865643 is a wasteful number, since it uses less digits than its factorization.

420049865643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140016621884.

The product of its (nonzero) digits is 4976640, while the sum is 51.

The spelling of 420049865643 in words is "four hundred twenty billion, forty-nine million, eight hundred sixty-five thousand, six hundred forty-three".