2510518732081 has 4 divisors (see below), whose sum is σ = 2516656920100. Its totient is φ = 2504380544064.

The previous prime is 2510518732013. The next prime is 2510518732087. The reversal of 2510518732081 is 1802378150152.

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 1080437592481 + 1430081139600 = 1039441^2 + 1195860^2 .

It is a cyclic number.

It is not a de Polignac number, because 2510518732081 - 2²¹ = 2510516634929 is a prime.

It is a super-2 number, since 2×2510518732081² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2510518732087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3069093396 + ... + 3069094213.

It is an arithmetic number, because the mean of its divisors is an integer number (629164230025).

Almost surely, 2^{2510518732081} is an apocalyptic number.

It is an amenable number.

2510518732081 is a deficient number, since it is larger than the sum of its proper divisors (6138188019).

2510518732081 is an equidigital number, since it uses as much as digits as its factorization.

2510518732081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6138188018.

The product of its (nonzero) digits is 134400, while the sum is 43.

The spelling of 2510518732081 in words is "two trillion, five hundred ten billion, five hundred eighteen million, seven hundred thirty-two thousand, eighty-one".