20708581584042 has 24 divisors (see below), whose sum is σ = 48947556471840. Its totient is φ = 6275327752680.

The previous prime is 20708581584029. The next prime is 20708581584071. The reversal of 20708581584042 is 24048518580702.

20708581584042 is a `hidden beast` number, since 2 + 0 + 7 + 0 + 8 + 58 + 1 + 584 + 0 + 4 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20708581584042.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52294397742 + ... + 52294398137.

It is an arithmetic number, because the mean of its divisors is an integer number (2039481519660).

Almost surely, 2^{20708581584042} is an apocalyptic number.

20708581584042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20708581584042 is an abundant number, since it is smaller than the sum of its proper divisors (28238974887798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20708581584042 is a wasteful number, since it uses less digits than its factorization.

20708581584042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104588795898 (or 104588795895 counting only the distinct ones).

The product of its (nonzero) digits is 5734400, while the sum is 54.

The spelling of 20708581584042 in words is "twenty trillion, seven hundred eight billion, five hundred eighty-one million, five hundred eighty-four thousand, forty-two".