420830783855 has 16 divisors (see below), whose sum is σ = 518591009664. Its totient is φ = 327681066240.

The previous prime is 420830783827. The next prime is 420830783897. The reversal of 420830783855 is 558387038024.

It is a happy number.

It is not a de Polignac number, because 420830783855 - 2¹⁰ = 420830782831 is a prime.

It is a super-2 number, since 2×420830783855² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420830783797 and 420830783806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4904342 + ... + 4989411.

It is an arithmetic number, because the mean of its divisors is an integer number (32411938104).

Almost surely, 2^420830783855 is an apocalyptic number.

420830783855 is a deficient number, since it is larger than the sum of its proper divisors (97760225809).

420830783855 is a wasteful number, since it uses less digits than its factorization.

420830783855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9893986.

The product of its (nonzero) digits is 6451200, while the sum is 53.

The spelling of 420830783855 in words is "four hundred twenty billion, eight hundred thirty million, seven hundred eighty-three thousand, eight hundred fifty-five".