20590891296 has 24 divisors (see below), whose sum is σ = 54051089904. Its totient is φ = 6863630400.

The previous prime is 20590891273. The next prime is 20590891297. The reversal of 20590891296 is 69219809502.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (20590891297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107244130 + ... + 107244321.

It is an arithmetic number, because the mean of its divisors is an integer number (2252128746).

Almost surely, 2^20590891296 is an apocalyptic number.

It is an amenable number.

20590891296 is an abundant number, since it is smaller than the sum of its proper divisors (33460198608).

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

20590891296 is a wasteful number, since it uses less digits than its factorization.

20590891296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214488464 (or 214488456 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 51.

The spelling of 20590891296 in words is "twenty billion, five hundred ninety million, eight hundred ninety-one thousand, two hundred ninety-six".