421016379885 has 192 divisors, whose sum is σ = 840987463680. Its totient is φ = 200975385600.

The previous prime is 421016379869. The next prime is 421016379937. The reversal of 421016379885 is 588973610124.

It is not a de Polignac number, because 421016379885 - 2⁴ = 421016379869 is a prime.

It is a super-2 number, since 2×421016379885² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 85034160 + ... + 85039110.

It is an arithmetic number, because the mean of its divisors is an integer number (4380143040).

It is a 1-persistent number, because it is pandigital, but 2⋅421016379885 = 842032759770 is not.

Almost surely, 2^421016379885 is an apocalyptic number.

421016379885 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

421016379885 is a deficient number, since it is larger than the sum of its proper divisors (419971083795).

421016379885 is a wasteful number, since it uses less digits than its factorization.

421016379885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5190 (or 5178 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 421016379885 in words is "four hundred twenty-one billion, sixteen million, three hundred seventy-nine thousand, eight hundred eighty-five".