51535151343131 has 16 divisors (see below), whose sum is σ = 52936881070080. Its totient is φ = 50152775883840.

The previous prime is 51535151343041. The next prime is 51535151343227. The reversal of 51535151343131 is 13134315153515.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51535151343131 is a prime.

It is a super-2 number, since 2×51535151343131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51535151349131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4100615 + ... + 10949216.

It is an arithmetic number, because the mean of its divisors is an integer number (3308555066880).

Almost surely, 2^{51535151343131} is an apocalyptic number.

51535151343131 is a deficient number, since it is larger than the sum of its proper divisors (1401729726949).

51535151343131 is a wasteful number, since it uses less digits than its factorization.

51535151343131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15050474.

The product of its digits is 202500, while the sum is 41.

Adding to 51535151343131 its reverse (13134315153515), we get a palindrome (64669466496646).

The spelling of 51535151343131 in words is "fifty-one trillion, five hundred thirty-five billion, one hundred fifty-one million, three hundred forty-three thousand, one hundred thirty-one".