20366868520 has 32 divisors (see below), whose sum is σ = 45834271200. Its totient is φ = 8145179968.

The previous prime is 20366868517. The next prime is 20366868521. The reversal of 20366868520 is 2586866302.

It is not an unprimeable number, because it can be changed into a prime (20366868521) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 174051 + ... + 266509.

It is an arithmetic number, because the mean of its divisors is an integer number (1432320975).

Almost surely, 2^20366868520 is an apocalyptic number.

20366868520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20366868520 is an abundant number, since it is smaller than the sum of its proper divisors (25467402680).

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

20366868520 is a wasteful number, since it uses less digits than its factorization.

20366868520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97977 (or 97973 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 20366868520 in words is "twenty billion, three hundred sixty-six million, eight hundred sixty-eight thousand, five hundred twenty".