5156531111233 has 4 divisors (see below), whose sum is σ = 5295896816980. Its totient is φ = 5017165405488.

The previous prime is 5156531111231. The next prime is 5156531111311. The reversal of 5156531111233 is 3321111356515.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4761263649024 + 395267462209 = 2182032^2 + 628703^2 .

It is a cyclic number.

It is not a de Polignac number, because 5156531111233 - 2¹ = 5156531111231 is a prime.

It is a super-3 number, since 3×5156531111233³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 139365705709 = 5156531111233 / (5 + 1 + 5 + 6 + 5 + 3 + 1 + 1 + 1 + 1 + 2 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5156531111192 and 5156531111201.

It is not an unprimeable number, because it can be changed into a prime (5156531111231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69682852818 + ... + 69682852891.

It is an arithmetic number, because the mean of its divisors is an integer number (1323974204245).

Almost surely, 2^{5156531111233} is an apocalyptic number.

It is an amenable number.

5156531111233 is a deficient number, since it is larger than the sum of its proper divisors (139365705747).

5156531111233 is a wasteful number, since it uses less digits than its factorization.

5156531111233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139365705746.

The product of its digits is 40500, while the sum is 37.

Adding to 5156531111233 its reverse (3321111356515), we get a palindrome (8477642467748).

The spelling of 5156531111233 in words is "five trillion, one hundred fifty-six billion, five hundred thirty-one million, one hundred eleven thousand, two hundred thirty-three".