20013155300 has 72 divisors (see below), whose sum is σ = 43893857280. Its totient is φ = 7919856000.

The previous prime is 20013155291. The next prime is 20013155341. The reversal of 20013155300 is 355131002.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4938275 + ... + 4942325.

Almost surely, 2^20013155300 is an apocalyptic number.

20013155300 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 20013155300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21946928640).

20013155300 is an abundant number, since it is smaller than the sum of its proper divisors (23880701980).

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

20013155300 is a wasteful number, since it uses less digits than its factorization.

20013155300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4581 (or 4574 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

Adding to 20013155300 its reverse (355131002), we get a palindrome (20368286302).

The spelling of 20013155300 in words is "twenty billion, thirteen million, one hundred fifty-five thousand, three hundred".