20135420300 has 36 divisors (see below), whose sum is σ = 43849417416. Its totient is φ = 8025494400.

The previous prime is 20135420257. The next prime is 20135420363. The reversal of 20135420300 is 302453102.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 330182 + ... + 386381.

Almost surely, 2^20135420300 is an apocalyptic number.

20135420300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20135420300 is an abundant number, since it is smaller than the sum of its proper divisors (23713997116).

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

20135420300 is a wasteful number, since it uses less digits than its factorization.

20135420300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716858 (or 716851 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 20135420300 its reverse (302453102), we get a palindrome (20437873402).

The spelling of 20135420300 in words is "twenty billion, one hundred thirty-five million, four hundred twenty thousand, three hundred".