53661038208 has 128 divisors (see below), whose sum is σ = 144486590400. Its totient is φ = 17643724800.

The previous prime is 53661038201. The next prime is 53661038209. The reversal of 53661038208 is 80283016635.

53661038208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 53661038208.

It is not an unprimeable number, because it can be changed into a prime (53661038201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10973428 + ... + 10978316.

Almost surely, 2^53661038208 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 53661038208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72243295200).

53661038208 is an abundant number, since it is smaller than the sum of its proper divisors (90825552192).

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

53661038208 is a wasteful number, since it uses less digits than its factorization.

53661038208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5290 (or 5278 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 53661038208 in words is "fifty-three billion, six hundred sixty-one million, thirty-eight thousand, two hundred eight".