19113288867461 has 2 divisors, whose sum is σ = 19113288867462. Its totient is φ = 19113288867460.

The previous prime is 19113288867443. The next prime is 19113288867473. The reversal of 19113288867461 is 16476888231191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11898187890625 + 7215100976836 = 3449375^2 + 2686094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19113288867461 is a prime.

It is a super-2 number, since 2×19113288867461² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19113288861461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9556644433730 + 9556644433731.

It is an arithmetic number, because the mean of its divisors is an integer number (9556644433731).

Almost surely, 2^{19113288867461} is an apocalyptic number.

It is an amenable number.

19113288867461 is a deficient number, since it is larger than the sum of its proper divisors (1).

19113288867461 is an equidigital number, since it uses as much as digits as its factorization.

19113288867461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27869184, while the sum is 65.

The spelling of 19113288867461 in words is "nineteen trillion, one hundred thirteen billion, two hundred eighty-eight million, eight hundred sixty-seven thousand, four hundred sixty-one".