51136133343 has 4 divisors (see below), whose sum is σ = 68181511128. Its totient is φ = 34090755560.

The previous prime is 51136133299. The next prime is 51136133369. The reversal of 51136133343 is 34333163115.

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

It is a cyclic number.

It is not a de Polignac number, because 51136133343 - 2¹³ = 51136125151 is a prime.

It is a super-2 number, since 2×51136133343² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51136133393) 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, 8522688888 + ... + 8522688893.

It is an arithmetic number, because the mean of its divisors is an integer number (17045377782).

Almost surely, 2^51136133343 is an apocalyptic number.

51136133343 is a deficient number, since it is larger than the sum of its proper divisors (17045377785).

51136133343 is a wasteful number, since it uses less digits than its factorization.

51136133343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17045377784.

The product of its digits is 29160, while the sum is 33.

Adding to 51136133343 its reverse (34333163115), we get a palindrome (85469296458).

The spelling of 51136133343 in words is "fifty-one billion, one hundred thirty-six million, one hundred thirty-three thousand, three hundred forty-three".