20013576100 has 72 divisors (see below), whose sum is σ = 49767384128. Its totient is φ = 6843312000.

The previous prime is 20013576073. The next prime is 20013576139. The reversal of 20013576100 is 167531002.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 222775 + ... + 299425.

Almost surely, 2^20013576100 is an apocalyptic number.

20013576100 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 20013576100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24883692064).

20013576100 is an abundant number, since it is smaller than the sum of its proper divisors (29753808028).

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

20013576100 is a wasteful number, since it uses less digits than its factorization.

20013576100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77045 (or 77038 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The spelling of 20013576100 in words is "twenty billion, thirteen million, five hundred seventy-six thousand, one hundred".