36180481820 has 72 divisors (see below), whose sum is σ = 90772589376. Its totient is φ = 12069461376.

The previous prime is 36180481819. The next prime is 36180481837. The reversal of 36180481820 is 2818408163.

It is a congruent number.

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, 462644 + ... + 535163.

It is an arithmetic number, because the mean of its divisors is an integer number (1260730408).

Almost surely, 2^36180481820 is an apocalyptic number.

It is an amenable number.

36180481820 is an abundant number, since it is smaller than the sum of its proper divisors (54592107556).

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

36180481820 is a wasteful number, since it uses less digits than its factorization.

36180481820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997867 (or 997858 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

Adding to 36180481820 its reverse (2818408163), we get a palindrome (38998889983).

The spelling of 36180481820 in words is "thirty-six billion, one hundred eighty million, four hundred eighty-one thousand, eight hundred twenty".