20569193484 has 48 divisors (see below), whose sum is σ = 54975099648. Its totient is φ = 5863635648.

The previous prime is 20569193483. The next prime is 20569193507. The reversal of 20569193484 is 48439196502.

It is not an unprimeable number, because it can be changed into a prime (20569193483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239167 + ... + 313590.

It is an arithmetic number, because the mean of its divisors is an integer number (1145314576).

Almost surely, 2^20569193484 is an apocalyptic number.

It is an amenable number.

20569193484 is an abundant number, since it is smaller than the sum of its proper divisors (34405906164).

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

20569193484 is a wasteful number, since it uses less digits than its factorization.

20569193484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553214 (or 553212 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 20569193484 in words is "twenty billion, five hundred sixty-nine million, one hundred ninety-three thousand, four hundred eighty-four".