20522555504 has 20 divisors (see below), whose sum is σ = 43377219960. Its totient is φ = 9328434240.

The previous prime is 20522555461. The next prime is 20522555507. The reversal of 20522555504 is 40555522502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522555507) 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 3 ways as a sum of consecutive naturals, for example, 58302539 + ... + 58302890.

It is an arithmetic number, because the mean of its divisors is an integer number (2168860998).

Almost surely, 2^20522555504 is an apocalyptic number.

It is an amenable number.

20522555504 is an abundant number, since it is smaller than the sum of its proper divisors (22854664456).

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

20522555504 is a wasteful number, since it uses less digits than its factorization.

20522555504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116605448 (or 116605442 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 35.

The spelling of 20522555504 in words is "twenty billion, five hundred twenty-two million, five hundred fifty-five thousand, five hundred four".