20300120181920 has 48 divisors (see below), whose sum is σ = 47963556837000. Its totient is φ = 8119282289664.

The previous prime is 20300120181889. The next prime is 20300120181937. The reversal of 20300120181920 is 2918102100302.

It can be written as a sum of positive squares in 4 ways, for example, as 20020147974544 + 279972207376 = 4474388^2 + 529124^2 .

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, 4279295 + ... + 7675454.

Almost surely, 2^{20300120181920} is an apocalyptic number.

20300120181920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20300120181920 is an abundant number, since it is smaller than the sum of its proper divisors (27663436655080).

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

20300120181920 is a wasteful number, since it uses less digits than its factorization.

20300120181920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11965377 (or 11965369 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 20300120181920 in words is "twenty trillion, three hundred billion, one hundred twenty million, one hundred eighty-one thousand, nine hundred twenty".