11334691987 has 2 divisors, whose sum is σ = 11334691988. Its totient is φ = 11334691986.

The previous prime is 11334691919. The next prime is 11334691993. The reversal of 11334691987 is 78919643311.

11334691987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (78919643311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11334691987 is a prime.

It is not a weakly prime, because it can be changed into another prime (11334691187) 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, 5667345993 + 5667345994.

It is an arithmetic number, because the mean of its divisors is an integer number (5667345994).

Almost surely, 2^11334691987 is an apocalyptic number.

11334691987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11334691987 is an equidigital number, since it uses as much as digits as its factorization.

11334691987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 52.

It can be divided in two parts, 113 and 34691987, that added together give a square (34692100 = 5890²).

The spelling of 11334691987 in words is "eleven billion, three hundred thirty-four million, six hundred ninety-one thousand, nine hundred eighty-seven".