420634495845 has 12 divisors (see below), whose sum is σ = 729099792876. Its totient is φ = 224338397760.

The previous prime is 420634495817. The next prime is 420634495859. The reversal of 420634495845 is 548594436024.

420634495845 is a `hidden beast` number, since 4 + 20 + 6 + 34 + 4 + 9 + 584 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 178254528804 + 242379967041 = 422202^2 + 492321^2 .

It is not a de Polignac number, because 420634495845 - 2²⁴ = 420617718629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420634495791 and 420634495800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4673716576 + ... + 4673716665.

It is an arithmetic number, because the mean of its divisors is an integer number (60758316073).

Almost surely, 2^420634495845 is an apocalyptic number.

420634495845 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

420634495845 is a deficient number, since it is larger than the sum of its proper divisors (308465297031).

420634495845 is a wasteful number, since it uses less digits than its factorization.

420634495845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9347433252 (or 9347433249 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 54.

The spelling of 420634495845 in words is "four hundred twenty billion, six hundred thirty-four million, four hundred ninety-five thousand, eight hundred forty-five".