5111528635161 has 81 divisors (see below), whose sum is σ = 8284293854109. Its totient is φ = 3035569328064.

The previous prime is 5111528635093. The next prime is 5111528635211. The reversal of 5111528635161 is 1615368251115.

The square root of 5111528635161 is 2260869.

It is a perfect power (a square), and thus also a powerful number.

5111528635161 is a `hidden beast` number, since 5 + 1 + 1 + 1 + 5 + 2 + 8 + 635 + 1 + 6 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 655444064025 + 4456084571136 = 809595^2 + 2110944^2 .

It is not a de Polignac number, because 5111528635161 - 2⁹ = 5111528634649 is a prime.

It is a super-2 number, since 2×5111528635161² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5111528635861) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 2557041840 + ... + 2557043838.

Almost surely, 2^{5111528635161} is an apocalyptic number.

5111528635161 is the 2260869-th square number.

5111528635161 is the 1130435-th centered octagonal number.

It is an amenable number.

5111528635161 is a deficient number, since it is larger than the sum of its proper divisors (3172765218948).

5111528635161 is an equidigital number, since it uses as much as digits as its factorization.

5111528635161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4088 (or 2044 counting only the distinct ones).

The product of its digits is 216000, while the sum is 45.

The spelling of 5111528635161 in words is "five trillion, one hundred eleven billion, five hundred twenty-eight million, six hundred thirty-five thousand, one hundred sixty-one".