20086778280 has 64 divisors (see below), whose sum is σ = 60269650560. Its totient is φ = 5355646208.

The previous prime is 20086778269. The next prime is 20086778303. The reversal of 20086778280 is 8287768002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1540669 + ... + 1553651.

It is an arithmetic number, because the mean of its divisors is an integer number (941713290).

Almost surely, 2^20086778280 is an apocalyptic number.

20086778280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20086778280 is an abundant number, since it is smaller than the sum of its proper divisors (40182872280).

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

20086778280 is a wasteful number, since it uses less digits than its factorization.

20086778280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25890 (or 25886 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 48.

The spelling of 20086778280 in words is "twenty billion, eighty-six million, seven hundred seventy-eight thousand, two hundred eighty".