11478374491 has 2 divisors, whose sum is σ = 11478374492. Its totient is φ = 11478374490.

The previous prime is 11478374447. The next prime is 11478374513. The reversal of 11478374491 is 19447387411.

It is a strong prime.

It is an emirp because it is prime and its reverse (19447387411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11478374491 - 2⁹ = 11478373979 is a prime.

It is not a weakly prime, because it can be changed into another prime (11478374191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5739187245 + 5739187246.

It is an arithmetic number, because the mean of its divisors is an integer number (5739187246).

Almost surely, 2^11478374491 is an apocalyptic number.

11478374491 is a deficient number, since it is larger than the sum of its proper divisors (1).

11478374491 is an equidigital number, since it uses as much as digits as its factorization.

11478374491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 49.

The spelling of 11478374491 in words is "eleven billion, four hundred seventy-eight million, three hundred seventy-four thousand, four hundred ninety-one".