20019709120 has 56 divisors (see below), whose sum is σ = 47722682304. Its totient is φ = 7999358976.

The previous prime is 20019709111. The next prime is 20019709169. The reversal of 20019709120 is 2190791002.

It is a super-2 number, since 2×20019709120² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272137 + ... + 337783.

Almost surely, 2^20019709120 is an apocalyptic number.

20019709120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20019709120 is an abundant number, since it is smaller than the sum of its proper divisors (27702973184).

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

20019709120 is an equidigital number, since it uses as much as digits as its factorization.

20019709120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66617 (or 66607 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 31.

The spelling of 20019709120 in words is "twenty billion, nineteen million, seven hundred nine thousand, one hundred twenty".