36531134420 has 96 divisors (see below), whose sum is σ = 89861135616. Its totient is φ = 12326451200.

The previous prime is 36531134399. The next prime is 36531134447. The reversal of 36531134420 is 2443113563.

36531134420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196754 + ... + 334326.

It is an arithmetic number, because the mean of its divisors is an integer number (936053496).

Almost surely, 2^36531134420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36531134420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44930567808).

36531134420 is an abundant number, since it is smaller than the sum of its proper divisors (53330001196).

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

36531134420 is a wasteful number, since it uses less digits than its factorization.

36531134420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137681 (or 137679 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 36531134420 its reverse (2443113563), we get a palindrome (38974247983).

The spelling of 36531134420 in words is "thirty-six billion, five hundred thirty-one million, one hundred thirty-four thousand, four hundred twenty".