420816822436 has 24 divisors (see below), whose sum is σ = 742624366176. Its totient is φ = 208640914560.

The previous prime is 420816822397. The next prime is 420816822443. The reversal of 420816822436 is 634228618024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370035 + ... + 989221.

It is an arithmetic number, because the mean of its divisors is an integer number (30942681924).

Almost surely, 2^420816822436 is an apocalyptic number.

It is an amenable number.

420816822436 is a deficient number, since it is larger than the sum of its proper divisors (321807543740).

420816822436 is a wasteful number, since it uses less digits than its factorization.

420816822436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620619 (or 620617 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 46.

The spelling of 420816822436 in words is "four hundred twenty billion, eight hundred sixteen million, eight hundred twenty-two thousand, four hundred thirty-six".