52181251696 has 120 divisors (see below), whose sum is σ = 120689775360. Its totient is φ = 21779251200.

The previous prime is 52181251687. The next prime is 52181251729. The reversal of 52181251696 is 69615218125.

52181251696 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×52181251696³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 24717681 + ... + 24719791.

It is an arithmetic number, because the mean of its divisors is an integer number (1005748128).

Almost surely, 2^52181251696 is an apocalyptic number.

52181251696 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52181251696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60344887680).

52181251696 is an abundant number, since it is smaller than the sum of its proper divisors (68508523664).

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

52181251696 is a wasteful number, since it uses less digits than its factorization.

52181251696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2943 (or 2930 counting only the distinct ones).

The product of its digits is 259200, while the sum is 46.

The spelling of 52181251696 in words is "fifty-two billion, one hundred eighty-one million, two hundred fifty-one thousand, six hundred ninety-six".