20488465068 has 24 divisors (see below), whose sum is σ = 49348561920. Its totient is φ = 6609182160.

The previous prime is 20488465057. The next prime is 20488465069. The reversal of 20488465068 is 86056488402.

It is a self number, because there is not a number n which added to its sum of digits gives 20488465068.

It is not an unprimeable number, because it can be changed into a prime (20488465069) 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, 27537888 + ... + 27538631.

It is an arithmetic number, because the mean of its divisors is an integer number (2056190080).

Almost surely, 2^20488465068 is an apocalyptic number.

It is an amenable number.

20488465068 is an abundant number, since it is smaller than the sum of its proper divisors (28860096852).

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

20488465068 is a wasteful number, since it uses less digits than its factorization.

20488465068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55076557 (or 55076555 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 51.

The spelling of 20488465068 in words is "twenty billion, four hundred eighty-eight million, four hundred sixty-five thousand, sixty-eight".