20520212592 has 40 divisors (see below), whose sum is σ = 57829691520. Its totient is φ = 6218246080.

The previous prime is 20520212563. The next prime is 20520212599. The reversal of 20520212592 is 29521202502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20520212599) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19431492 + ... + 19432547.

It is an arithmetic number, because the mean of its divisors is an integer number (1445742288).

Almost surely, 2^20520212592 is an apocalyptic number.

20520212592 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20520212592 is an abundant number, since it is smaller than the sum of its proper divisors (37309478928).

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

20520212592 is a wasteful number, since it uses less digits than its factorization.

20520212592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38864061 (or 38864055 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 20520212592 in words is "twenty billion, five hundred twenty million, two hundred twelve thousand, five hundred ninety-two".