5161849056 has 288 divisors, whose sum is σ = 18277721280. Its totient is φ = 1345462272.

The previous prime is 5161849039. The next prime is 5161849057. The reversal of 5161849056 is 6509481615.

5161849056 is a `hidden beast` number, since 51 + 61 + 8 + 490 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×5161849056² = 53289371353856182272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5161849057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2331406 + ... + 2333618.

It is an arithmetic number, because the mean of its divisors is an integer number (63464310).

Almost surely, 2^5161849056 is an apocalyptic number.

5161849056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5161849056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9138860640).

5161849056 is an abundant number, since it is smaller than the sum of its proper divisors (13115872224).

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

5161849056 is a wasteful number, since it uses less digits than its factorization.

5161849056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338 (or 2327 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 5161849056 is about 71846.0093255012. The cubic root of 5161849056 is about 1728.2309040720.

The spelling of 5161849056 in words is "five billion, one hundred sixty-one million, eight hundred forty-nine thousand, fifty-six".