53185391880 has 256 divisors, whose sum is σ = 169403270400. Its totient is φ = 13341818880.

The previous prime is 53185391879. The next prime is 53185391887. The reversal of 53185391880 is 8819358135.

It is not an unprimeable number, because it can be changed into a prime (53185391887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15383112 + ... + 15386568.

It is an arithmetic number, because the mean of its divisors is an integer number (661731525).

Almost surely, 2^53185391880 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 53185391880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84701635200).

53185391880 is an abundant number, since it is smaller than the sum of its proper divisors (116217878520).

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

53185391880 is a wasteful number, since it uses less digits than its factorization.

53185391880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3624 (or 3620 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 51.

The spelling of 53185391880 in words is "fifty-three billion, one hundred eighty-five million, three hundred ninety-one thousand, eight hundred eighty".