36918464440 has 128 divisors (see below), whose sum is σ = 97757150400. Its totient is φ = 12370821120.

The previous prime is 36918464437. The next prime is 36918464449. The reversal of 36918464440 is 4446481963.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36918464449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3501096 + ... + 3511624.

Almost surely, 2^36918464440 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 36918464440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48878575200).

36918464440 is an abundant number, since it is smaller than the sum of its proper divisors (60838685960).

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

36918464440 is a wasteful number, since it uses less digits than its factorization.

36918464440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11177 (or 11173 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 49.

The spelling of 36918464440 in words is "thirty-six billion, nine hundred eighteen million, four hundred sixty-four thousand, four hundred forty".