5161616145 has 36 divisors (see below), whose sum is σ = 10407508020. Its totient is φ = 2359594944.

The previous prime is 5161616129. The next prime is 5161616197. The reversal of 5161616145 is 5416161615.

It can be written as a sum of positive squares in 2 ways, for example, as 1213755921 + 3947860224 = 34839^2 + 62832^2 .

It is not a de Polignac number, because 5161616145 - 2⁴ = 5161616129 is a prime.

It is a super-2 number, since 2×5161616145² = 53284562456649322050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1168230 + ... + 1172639.

It is an arithmetic number, because the mean of its divisors is an integer number (289097445).

Almost surely, 2^5161616145 is an apocalyptic number.

It is an amenable number.

5161616145 is an abundant number, since it is smaller than the sum of its proper divisors (5245891875).

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

5161616145 is a wasteful number, since it uses less digits than its factorization.

5161616145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340894 (or 2340884 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 5161616145 is about 71844.3884029922. The cubic root of 5161616145 is about 1728.2049101541.

The spelling of 5161616145 in words is "five billion, one hundred sixty-one million, six hundred sixteen thousand, one hundred forty-five".