420210550845 has 16 divisors (see below), whose sum is σ = 747040979520. Its totient is φ = 224112293712.

The previous prime is 420210550841. The next prime is 420210550861. The reversal of 420210550845 is 548055012024.

420210550845 is a `hidden beast` number, since 4 + 2 + 0 + 2 + 105 + 508 + 45 = 666.

It is not a de Polignac number, because 420210550845 - 2² = 420210550841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420210550841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1556335239 + ... + 1556335508.

It is an arithmetic number, because the mean of its divisors is an integer number (46690061220).

Almost surely, 2^420210550845 is an apocalyptic number.

420210550845 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

420210550845 is a deficient number, since it is larger than the sum of its proper divisors (326830428675).

420210550845 is a wasteful number, since it uses less digits than its factorization.

420210550845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3112670761 (or 3112670755 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

Adding to 420210550845 its reverse (548055012024), we get a palindrome (968265562869).

The spelling of 420210550845 in words is "four hundred twenty billion, two hundred ten million, five hundred fifty thousand, eight hundred forty-five".