420671869775 has 24 divisors (see below), whose sum is σ = 549619680720. Its totient is φ = 318515984640.

The previous prime is 420671869759. The next prime is 420671869781. The reversal of 420671869775 is 577968176024.

It is not a de Polignac number, because 420671869775 - 2⁴ = 420671869759 is a prime.

It is a super-3 number, since 3×420671869775³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62009 + ... + 919341.

It is an arithmetic number, because the mean of its divisors is an integer number (22900820030).

Almost surely, 2^420671869775 is an apocalyptic number.

420671869775 is a deficient number, since it is larger than the sum of its proper divisors (128947810945).

420671869775 is a wasteful number, since it uses less digits than its factorization.

420671869775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858395 (or 858390 counting only the distinct ones).

The product of its (nonzero) digits is 35562240, while the sum is 62.

The spelling of 420671869775 in words is "four hundred twenty billion, six hundred seventy-one million, eight hundred sixty-nine thousand, seven hundred seventy-five".