20050015100 has 72 divisors (see below), whose sum is σ = 44815360800. Its totient is φ = 7780389120.

The previous prime is 20050015087. The next prime is 20050015129. The reversal of 20050015100 is 151005002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1283537 + ... + 1299063.

Almost surely, 2^20050015100 is an apocalyptic number.

20050015100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20050015100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22407680400).

20050015100 is an abundant number, since it is smaller than the sum of its proper divisors (24765345700).

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

20050015100 is a wasteful number, since it uses less digits than its factorization.

20050015100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15927 (or 15920 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 14.

The spelling of 20050015100 in words is "twenty billion, fifty million, fifteen thousand, one hundred".