42582808821 has 16 divisors (see below), whose sum is σ = 64893616128. Its totient is φ = 24330961200.

The previous prime is 42582808781. The next prime is 42582808831. The reversal of 42582808821 is 12880828524.

It is a happy number.

It is not a de Polignac number, because 42582808821 - 2⁷ = 42582808693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42582808831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186076 + ... + 346106.

It is an arithmetic number, because the mean of its divisors is an integer number (4055851008).

Almost surely, 2^42582808821 is an apocalyptic number.

It is an amenable number.

42582808821 is a deficient number, since it is larger than the sum of its proper divisors (22310807307).

42582808821 is a wasteful number, since it uses less digits than its factorization.

42582808821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172712.

The product of its (nonzero) digits is 655360, while the sum is 48.

The spelling of 42582808821 in words is "forty-two billion, five hundred eighty-two million, eight hundred eight thousand, eight hundred twenty-one".