642282761846 has 16 divisors (see below), whose sum is σ = 1057456064448. Its totient is φ = 290155624200.

The previous prime is 642282761779. The next prime is 642282761851. The reversal of 642282761846 is 648167282246.

It is a junction number, because it is equal to n+sod(n) for n = 642282761791 and 642282761800.

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 in 7 ways as a sum of consecutive naturals, for example, 89550620 + ... + 89557791.

It is an arithmetic number, because the mean of its divisors is an integer number (66091004028).

Almost surely, 2^642282761846 is an apocalyptic number.

642282761846 is a deficient number, since it is larger than the sum of its proper divisors (415173302602).

642282761846 is a wasteful number, since it uses less digits than its factorization.

642282761846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179108587.

The product of its digits is 12386304, while the sum is 56.

The spelling of 642282761846 in words is "six hundred forty-two billion, two hundred eighty-two million, seven hundred sixty-one thousand, eight hundred forty-six".