20395718180 has 24 divisors (see below), whose sum is σ = 42835649472. Its totient is φ = 8157403232.

The previous prime is 20395718179. The next prime is 20395718221. The reversal of 20395718180 is 8181759302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153089 + ... + 253431.

It is an arithmetic number, because the mean of its divisors is an integer number (1784818728).

Almost surely, 2^20395718180 is an apocalyptic number.

20395718180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20395718180 is an abundant number, since it is smaller than the sum of its proper divisors (22439931292).

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

20395718180 is a wasteful number, since it uses less digits than its factorization.

20395718180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110515 (or 110513 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 20395718180 in words is "twenty billion, three hundred ninety-five million, seven hundred eighteen thousand, one hundred eighty".