2518068881 has 4 divisors (see below), whose sum is σ = 2544028452. Its totient is φ = 2492109312.

The previous prime is 2518068871. The next prime is 2518068907. The reversal of 2518068881 is 1888608152.

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 1121178256 + 1396890625 = 33484^2 + 37375^2 .

It is a cyclic number.

It is not a de Polignac number, because 2518068881 - 2¹⁴ = 2518052497 is a prime.

It is a super-2 number, since 2×2518068881² = 12681341778921184322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2518068871) 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, 12979640 + ... + 12979833.

It is an arithmetic number, because the mean of its divisors is an integer number (636007113).

Almost surely, 2^2518068881 is an apocalyptic number.

It is an amenable number.

2518068881 is a deficient number, since it is larger than the sum of its proper divisors (25959571).

2518068881 is an equidigital number, since it uses as much as digits as its factorization.

2518068881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25959570.

The product of its (nonzero) digits is 245760, while the sum is 47.

The square root of 2518068881 is about 50180.3635000784. The cubic root of 2518068881 is about 1360.4707282347.

The spelling of 2518068881 in words is "two billion, five hundred eighteen million, sixty-eight thousand, eight hundred eighty-one".