420116571605 has 8 divisors (see below), whose sum is σ = 504179748864. Its totient is φ = 336066682000.

The previous prime is 420116571583. The next prime is 420116571661. The reversal of 420116571605 is 506175611024.

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

It is not a de Polignac number, because 420116571605 - 2⁸ = 420116571349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3252221 + ... + 3378930.

It is an arithmetic number, because the mean of its divisors is an integer number (63022468608).

Almost surely, 2^420116571605 is an apocalyptic number.

It is an amenable number.

420116571605 is a deficient number, since it is larger than the sum of its proper divisors (84063177259).

420116571605 is a wasteful number, since it uses less digits than its factorization.

420116571605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6643827.

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 420116571605 in words is "four hundred twenty billion, one hundred sixteen million, five hundred seventy-one thousand, six hundred five".