420408864866 has 8 divisors (see below), whose sum is σ = 650955661824. Its totient is φ = 203423644260.

The previous prime is 420408864853. The next prime is 420408864871. The reversal of 420408864866 is 668468804024.

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

It is a super-2 number, since 2×420408864866² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3390394010 + ... + 3390394133.

It is an arithmetic number, because the mean of its divisors is an integer number (81369457728).

Almost surely, 2^420408864866 is an apocalyptic number.

420408864866 is a deficient number, since it is larger than the sum of its proper divisors (230546796958).

420408864866 is a wasteful number, since it uses less digits than its factorization.

420408864866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6780788176.

The product of its (nonzero) digits is 14155776, while the sum is 56.

The spelling of 420408864866 in words is "four hundred twenty billion, four hundred eight million, eight hundred sixty-four thousand, eight hundred sixty-six".