11374440491 has 2 divisors, whose sum is σ = 11374440492. Its totient is φ = 11374440490.

The previous prime is 11374440479. The next prime is 11374440499. The reversal of 11374440491 is 19404447311.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11374440491 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11374440499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5687220245 + 5687220246.

It is an arithmetic number, because the mean of its divisors is an integer number (5687220246).

Almost surely, 2^11374440491 is an apocalyptic number.

11374440491 is a deficient number, since it is larger than the sum of its proper divisors (1).

11374440491 is an equidigital number, since it uses as much as digits as its factorization.

11374440491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 11374440491 in words is "eleven billion, three hundred seventy-four million, four hundred forty thousand, four hundred ninety-one".