52581883536 has 640 divisors, whose sum is σ = 192459904000. Its totient is φ = 13826598912.

The previous prime is 52581883517. The next prime is 52581883561. The reversal of 52581883536 is 63538818525.

It is a happy number.

52581883536 is a `hidden beast` number, since 5 + 2 + 581 + 8 + 8 + 3 + 53 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (6912000) is a multiple of the sum of its prime factors (400).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 156029160 + ... + 156029496.

It is an arithmetic number, because the mean of its divisors is an integer number (300718600).

Almost surely, 2^52581883536 is an apocalyptic number.

52581883536 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 52581883536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96229952000).

52581883536 is an abundant number, since it is smaller than the sum of its proper divisors (139878020464).

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

52581883536 is an equidigital number, since it uses as much as digits as its factorization.

52581883536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 362 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 54.

The spelling of 52581883536 in words is "fifty-two billion, five hundred eighty-one million, eight hundred eighty-three thousand, five hundred thirty-six".