20508594912 has 576 divisors, whose sum is σ = 70733295360. Its totient is φ = 5573836800.

The previous prime is 20508594833. The next prime is 20508594937. The reversal of 20508594912 is 21949580502.

It is a happy number.

20508594912 is a `hidden beast` number, since 2 + 0 + 50 + 8 + 594 + 9 + 1 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 75677337 + ... + 75677607.

It is an arithmetic number, because the mean of its divisors is an integer number (122800860).

Almost surely, 2^20508594912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20508594912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35366647680).

20508594912 is an abundant number, since it is smaller than the sum of its proper divisors (50224700448).

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

20508594912 is a wasteful number, since it uses less digits than its factorization.

20508594912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 20508594912 in words is "twenty billion, five hundred eight million, five hundred ninety-four thousand, nine hundred twelve".