420830783806 has 4 divisors (see below), whose sum is σ = 631246175712. Its totient is φ = 210415391902.

The previous prime is 420830783749. The next prime is 420830783827. The reversal of 420830783806 is 608387038024.

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

It is a self number, because there is not a number n which added to its sum of digits gives 420830783806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105207695950 + ... + 105207695953.

It is an arithmetic number, because the mean of its divisors is an integer number (157811543928).

Almost surely, 2^420830783806 is an apocalyptic number.

420830783806 is a deficient number, since it is larger than the sum of its proper divisors (210415391906).

420830783806 is a wasteful number, since it uses less digits than its factorization.

420830783806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210415391905.

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 420830783806 in words is "four hundred twenty billion, eight hundred thirty million, seven hundred eighty-three thousand, eight hundred six".