2811869617913 has 2 divisors, whose sum is σ = 2811869617914. Its totient is φ = 2811869617912.

The previous prime is 2811869617859. The next prime is 2811869617927. The reversal of 2811869617913 is 3197169681182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1496932674064 + 1314936943849 = 1223492^2 + 1146707^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2811869617913 is a prime.

It is a super-2 number, since 2×2811869617913² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2811869617993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1405934808956 + 1405934808957.

It is an arithmetic number, because the mean of its divisors is an integer number (1405934808957).

Almost surely, 2^{2811869617913} is an apocalyptic number.

It is an amenable number.

2811869617913 is a deficient number, since it is larger than the sum of its proper divisors (1).

2811869617913 is an equidigital number, since it uses as much as digits as its factorization.

2811869617913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 62.

The spelling of 2811869617913 in words is "two trillion, eight hundred eleven billion, eight hundred sixty-nine million, six hundred seventeen thousand, nine hundred thirteen".