5161071986 has 16 divisors (see below), whose sum is σ = 8848587264. Its totient is φ = 2211629184.

The previous prime is 5161071967. The next prime is 5161071989. The reversal of 5161071986 is 6891701615.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5161071989) 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, 148706 + ... + 180098.

It is an arithmetic number, because the mean of its divisors is an integer number (553036704).

Almost surely, 2^5161071986 is an apocalyptic number.

5161071986 is a deficient number, since it is larger than the sum of its proper divisors (3687515278).

5161071986 is a wasteful number, since it uses less digits than its factorization.

5161071986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43145.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 5161071986 is about 71840.6012363482. The cubic root of 5161071986 is about 1728.1441765080.

The spelling of 5161071986 in words is "five billion, one hundred sixty-one million, seventy-one thousand, nine hundred eighty-six".