420266648878 has 4 divisors (see below), whose sum is σ = 630399973320. Its totient is φ = 210133324438.

The previous prime is 420266648807. The next prime is 420266648897. The reversal of 420266648878 is 878846662024.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105066662218 + ... + 105066662221.

It is an arithmetic number, because the mean of its divisors is an integer number (157599993330).

Almost surely, 2^420266648878 is an apocalyptic number.

420266648878 is a deficient number, since it is larger than the sum of its proper divisors (210133324442).

420266648878 is a wasteful number, since it uses less digits than its factorization.

420266648878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210133324441.

The product of its (nonzero) digits is 49545216, while the sum is 61.

The spelling of 420266648878 in words is "four hundred twenty billion, two hundred sixty-six million, six hundred forty-eight thousand, eight hundred seventy-eight".