5168781380 has 24 divisors (see below), whose sum is σ = 12405075648. Its totient is φ = 1772153568.

The previous prime is 5168781361. The next prime is 5168781383. The reversal of 5168781380 is 831878615.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (5168781383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18459794 + ... + 18460073.

It is an arithmetic number, because the mean of its divisors is an integer number (516878152).

Almost surely, 2^5168781380 is an apocalyptic number.

It is an amenable number.

5168781380 is an abundant number, since it is smaller than the sum of its proper divisors (7236294268).

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

5168781380 is a wasteful number, since it uses less digits than its factorization.

5168781380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36919883 (or 36919881 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 47.

The square root of 5168781380 is about 71894.2374603139. The cubic root of 5168781380 is about 1729.0042249713.

The spelling of 5168781380 in words is "five billion, one hundred sixty-eight million, seven hundred eighty-one thousand, three hundred eighty".