20520423876 has 12 divisors (see below), whose sum is σ = 47880989072. Its totient is φ = 6840141288.

The previous prime is 20520423857. The next prime is 20520423899. The reversal of 20520423876 is 67832402502.

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

It is a super-3 number, since 3×20520423876³ (a number of 32 digits) contains 333 as substring.

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, 855017650 + ... + 855017673.

Almost surely, 2^20520423876 is an apocalyptic number.

It is an amenable number.

20520423876 is an abundant number, since it is smaller than the sum of its proper divisors (27360565196).

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

20520423876 is a wasteful number, since it uses less digits than its factorization.

20520423876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710035330 (or 1710035328 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 20520423876 in words is "twenty billion, five hundred twenty million, four hundred twenty-three thousand, eight hundred seventy-six".