53581553116 has 72 divisors (see below), whose sum is σ = 117588875040. Its totient is φ = 21175152768.

The previous prime is 53581553093. The next prime is 53581553119. The reversal of 53581553116 is 61135518535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53581553119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2570745 + ... + 2591503.

It is an arithmetic number, because the mean of its divisors is an integer number (1633178820).

Almost surely, 2^53581553116 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 53581553116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58794437520).

53581553116 is an abundant number, since it is smaller than the sum of its proper divisors (64007321924).

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

53581553116 is a wasteful number, since it uses less digits than its factorization.

53581553116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21803 (or 21794 counting only the distinct ones).

The product of its digits is 270000, while the sum is 43.

The spelling of 53581553116 in words is "fifty-three billion, five hundred eighty-one million, five hundred fifty-three thousand, one hundred sixteen".