20575785108 has 12 divisors (see below), whose sum is σ = 48010165280. Its totient is φ = 6858595032.

The previous prime is 20575785091. The next prime is 20575785127. The reversal of 20575785108 is 80158757502.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857324368 + ... + 857324391.

Almost surely, 2^20575785108 is an apocalyptic number.

It is an amenable number.

20575785108 is an abundant number, since it is smaller than the sum of its proper divisors (27434380172).

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

20575785108 is a wasteful number, since it uses less digits than its factorization.

20575785108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714648766 (or 1714648764 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 48.

The spelling of 20575785108 in words is "twenty billion, five hundred seventy-five million, seven hundred eighty-five thousand, one hundred eight".