515655164131 has 4 divisors (see below), whose sum is σ = 515893785064. Its totient is φ = 515416543200.

The previous prime is 515655164119. The next prime is 515655164147. The reversal of 515655164131 is 131461556515.

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 515655164131 - 2¹¹ = 515655162083 is a prime.

It is a super-2 number, since 2×515655164131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (515655162131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119307225 + ... + 119311546.

It is an arithmetic number, because the mean of its divisors is an integer number (128973446266).

Almost surely, 2^515655164131 is an apocalyptic number.

515655164131 is a deficient number, since it is larger than the sum of its proper divisors (238620933).

515655164131 is a wasteful number, since it uses less digits than its factorization.

515655164131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238620932.

The product of its digits is 270000, while the sum is 43.

The spelling of 515655164131 in words is "five hundred fifteen billion, six hundred fifty-five million, one hundred sixty-four thousand, one hundred thirty-one".