5178271680 has 168 divisors, whose sum is σ = 18471044592. Its totient is φ = 1380851712.

The previous prime is 5178271673. The next prime is 5178271759. The reversal of 5178271680 is 861728715.

It is a happy number.

5178271680 is a `hidden beast` number, since 517 + 8 + 2 + 71 + 68 + 0 = 666.

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 23 ways as a sum of consecutive naturals, for example, 44464 + ... + 111056.

It is an arithmetic number, because the mean of its divisors is an integer number (109946694).

Almost surely, 2^5178271680 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 5178271680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9235522296).

5178271680 is an abundant number, since it is smaller than the sum of its proper divisors (13292772912).

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

5178271680 is an equidigital number, since it uses as much as digits as its factorization.

5178271680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66625 (or 66603 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 45.

The square root of 5178271680 is about 71960.2090046993. The cubic root of 5178271680 is about 1730.0617751115.

The spelling of 5178271680 in words is "five billion, one hundred seventy-eight million, two hundred seventy-one thousand, six hundred eighty".