5181574656 has 80 divisors (see below), whose sum is σ = 13827686400. Its totient is φ = 1724233728.

The previous prime is 5181574603. The next prime is 5181574693. The reversal of 5181574656 is 6564751815.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009665 + ... + 1014783.

It is an arithmetic number, because the mean of its divisors is an integer number (172846080).

Almost surely, 2^5181574656 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 5181574656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6913843200).

5181574656 is an abundant number, since it is smaller than the sum of its proper divisors (8646111744).

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

5181574656 is an equidigital number, since it uses as much as digits as its factorization.

5181574656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5799 (or 5783 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 48.

The square root of 5181574656 is about 71983.1553629042. The cubic root of 5181574656 is about 1730.4295386134.

The spelling of 5181574656 in words is "five billion, one hundred eighty-one million, five hundred seventy-four thousand, six hundred fifty-six".