2512109881 has 2 divisors, whose sum is σ = 2512109882. Its totient is φ = 2512109880.

The previous prime is 2512109879. The next prime is 2512109903. The reversal of 2512109881 is 1889012152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2512014400 + 95481 = 50120^2 + 309^2 .

It is a cyclic number.

It is not a de Polignac number, because 2512109881 - 2¹ = 2512109879 is a prime.

It is a super-2 number, since 2×2512109881² = 12621392108435668322, which contains 22 as substring.

Together with 2512109879, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2512109881.

It is not a weakly prime, because it can be changed into another prime (2512109851) 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 as a sum of consecutive naturals, namely, 1256054940 + 1256054941.

It is an arithmetic number, because the mean of its divisors is an integer number (1256054941).

Almost surely, 2^2512109881 is an apocalyptic number.

It is an amenable number.

2512109881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2512109881 is an equidigital number, since it uses as much as digits as its factorization.

2512109881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 37.

The square root of 2512109881 is about 50120.9525148914. The cubic root of 2512109881 is about 1359.3966977017.

The spelling of 2512109881 in words is "two billion, five hundred twelve million, one hundred nine thousand, eight hundred eighty-one".