11139771287 has 2 divisors, whose sum is σ = 11139771288. Its totient is φ = 11139771286.

The previous prime is 11139771211. The next prime is 11139771323. The reversal of 11139771287 is 78217793111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11139771287 - 2⁸ = 11139771031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11139774287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5569885643 + 5569885644.

It is an arithmetic number, because the mean of its divisors is an integer number (5569885644).

Almost surely, 2^11139771287 is an apocalyptic number.

11139771287 is a deficient number, since it is larger than the sum of its proper divisors (1).

11139771287 is an equidigital number, since it uses as much as digits as its factorization.

11139771287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 47.

The spelling of 11139771287 in words is "eleven billion, one hundred thirty-nine million, seven hundred seventy-one thousand, two hundred eighty-seven".