515981141243 has 4 divisors (see below), whose sum is σ = 525716634528. Its totient is φ = 506245647960.

The previous prime is 515981141201. The next prime is 515981141267. The reversal of 515981141243 is 342141189515.

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 515981141243 - 2²⁸ = 515712705787 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 515981141194 and 515981141203.

It is not an unprimeable number, because it can be changed into a prime (515981141293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4867746563 + ... + 4867746668.

It is an arithmetic number, because the mean of its divisors is an integer number (131429158632).

Almost surely, 2^515981141243 is an apocalyptic number.

515981141243 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

515981141243 is a deficient number, since it is larger than the sum of its proper divisors (9735493285).

515981141243 is an equidigital number, since it uses as much as digits as its factorization.

515981141243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9735493284.

The product of its digits is 172800, while the sum is 44.

The spelling of 515981141243 in words is "five hundred fifteen billion, nine hundred eighty-one million, one hundred forty-one thousand, two hundred forty-three".