5178875640 has 128 divisors (see below), whose sum is σ = 15947366400. Its totient is φ = 1344660480.

The previous prime is 5178875591. The next prime is 5178875641. The reversal of 5178875640 is 465788715.

It is a happy number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5178875641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4048521 + ... + 4049799.

It is an arithmetic number, because the mean of its divisors is an integer number (124588800).

Almost surely, 2^5178875640 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 5178875640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7973683200).

5178875640 is an abundant number, since it is smaller than the sum of its proper divisors (10768490760).

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

5178875640 is a wasteful number, since it uses less digits than its factorization.

5178875640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157 (or 2153 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 51.

The square root of 5178875640 is about 71964.4053682096. The cubic root of 5178875640 is about 1730.1290335557.

The spelling of 5178875640 in words is "five billion, one hundred seventy-eight million, eight hundred seventy-five thousand, six hundred forty".