20135200005 has 24 divisors (see below), whose sum is σ = 34906119768. Its totient is φ = 10737202176.

The previous prime is 20135199979. The next prime is 20135200009. The reversal of 20135200005 is 50000253102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6109298244 + 14025901761 = 78162^2 + 118431^2 .

It is not a de Polignac number, because 20135200005 - 2²¹ = 20133102853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135200009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 320029 + ... + 377741.

It is an arithmetic number, because the mean of its divisors is an integer number (1454421657).

Almost surely, 2^20135200005 is an apocalyptic number.

It is an amenable number.

20135200005 is a deficient number, since it is larger than the sum of its proper divisors (14770919763).

20135200005 is a wasteful number, since it uses less digits than its factorization.

20135200005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65477 (or 65474 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

Adding to 20135200005 its reverse (50000253102), we get a palindrome (70135453107).

The spelling of 20135200005 in words is "twenty billion, one hundred thirty-five million, two hundred thousand, five".