2871998299081 has 2 divisors, whose sum is σ = 2871998299082. Its totient is φ = 2871998299080.

The previous prime is 2871998298941. The next prime is 2871998299091. The reversal of 2871998299081 is 1809928991782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2860888085056 + 11110214025 = 1691416^2 + 105405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2871998299081 is a prime.

It is a super-2 number, since 2×2871998299081² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2871998298995 and 2871998299013.

It is not a weakly prime, because it can be changed into another prime (2871998299091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1435999149540 + 1435999149541.

It is an arithmetic number, because the mean of its divisors is an integer number (1435999149541).

Almost surely, 2^{2871998299081} is an apocalyptic number.

It is an amenable number.

2871998299081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2871998299081 is an equidigital number, since it uses as much as digits as its factorization.

2871998299081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94058496, while the sum is 73.

The spelling of 2871998299081 in words is "two trillion, eight hundred seventy-one billion, nine hundred ninety-eight million, two hundred ninety-nine thousand, eighty-one".