420854171065 has 8 divisors (see below), whose sum is σ = 505328698368. Its totient is φ = 336480874800.

The previous prime is 420854171027. The next prime is 420854171071. The reversal of 420854171065 is 560171458024.

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

It is not a de Polignac number, because 420854171065 - 2⁹ = 420854170553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25298611 + ... + 25315240.

It is an arithmetic number, because the mean of its divisors is an integer number (63166087296).

Almost surely, 2^420854171065 is an apocalyptic number.

It is an amenable number.

420854171065 is a deficient number, since it is larger than the sum of its proper divisors (84474527303).

420854171065 is a wasteful number, since it uses less digits than its factorization.

420854171065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50615519.

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 420854171065 in words is "four hundred twenty billion, eight hundred fifty-four million, one hundred seventy-one thousand, sixty-five".