54136644736 has 64 divisors (see below), whose sum is σ = 109737475200. Its totient is φ = 26597975040.

The previous prime is 54136644733. The next prime is 54136644761. The reversal of 54136644736 is 63744663145.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 54136644736.

It is not an unprimeable number, because it can be changed into a prime (54136644733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2120946 + ... + 2146318.

It is an arithmetic number, because the mean of its divisors is an integer number (1714648050).

Almost surely, 2^54136644736 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 54136644736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54868737600).

54136644736 is an abundant number, since it is smaller than the sum of its proper divisors (55600830464).

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

54136644736 is a wasteful number, since it uses less digits than its factorization.

54136644736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25677 (or 25665 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 49.

The spelling of 54136644736 in words is "fifty-four billion, one hundred thirty-six million, six hundred forty-four thousand, seven hundred thirty-six".