52161342266880 has 6400 divisors, whose sum is σ = 260954369280000. Its totient is φ = 9914183516160.

The previous prime is 52161342266743. The next prime is 52161342266893. The reversal of 52161342266880 is 8866224316125.

52161342266880 is a `hidden beast` number, since 5 + 2 + 161 + 342 + 2 + 6 + 68 + 80 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 639 ways as a sum of consecutive naturals, for example, 1798666974706 + ... + 1798666974734.

It is an arithmetic number, because the mean of its divisors is an integer number (40774120200).

Almost surely, 2^{52161342266880} 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 52161342266880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130477184640000).

52161342266880 is an abundant number, since it is smaller than the sum of its proper divisors (208793027013120).

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

52161342266880 is an equidigital number, since it uses as much as digits as its factorization.

52161342266880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 52161342266880 in words is "fifty-two trillion, one hundred sixty-one billion, three hundred forty-two million, two hundred sixty-six thousand, eight hundred eighty".