20534759844 has 24 divisors (see below), whose sum is σ = 47917084320. Its totient is φ = 6844542144.

The previous prime is 20534759807. The next prime is 20534759857. The reversal of 20534759844 is 44895743502.

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, 258312 + ... + 328320.

It is an arithmetic number, because the mean of its divisors is an integer number (1996545180).

Almost surely, 2^20534759844 is an apocalyptic number.

It is an amenable number.

20534759844 is an abundant number, since it is smaller than the sum of its proper divisors (27382324476).

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

20534759844 is a wasteful number, since it uses less digits than its factorization.

20534759844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94459 (or 94457 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 51.

The spelling of 20534759844 in words is "twenty billion, five hundred thirty-four million, seven hundred fifty-nine thousand, eight hundred forty-four".