52156661760 has 768 divisors, whose sum is σ = 214610872320. Its totient is φ = 11466178560.

The previous prime is 52156661743. The next prime is 52156661779. The reversal of 52156661760 is 6716665125.

It is a tau number, because it is divible by the number of its divisors (768).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 319979439 + ... + 319979601.

It is an arithmetic number, because the mean of its divisors is an integer number (279441240).

Almost surely, 2^52156661760 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 52156661760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107305436160).

52156661760 is an abundant number, since it is smaller than the sum of its proper divisors (162454210560).

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

52156661760 is a wasteful number, since it uses less digits than its factorization.

52156661760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 52156661760 in words is "fifty-two billion, one hundred fifty-six million, six hundred sixty-one thousand, seven hundred sixty".