11456136491 has 2 divisors, whose sum is σ = 11456136492. Its totient is φ = 11456136490.

The previous prime is 11456136487. The next prime is 11456136547. The reversal of 11456136491 is 19463165411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11456136491 - 2² = 11456136487 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11456106491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5728068245 + 5728068246.

It is an arithmetic number, because the mean of its divisors is an integer number (5728068246).

Almost surely, 2^11456136491 is an apocalyptic number.

11456136491 is a deficient number, since it is larger than the sum of its proper divisors (1).

11456136491 is an equidigital number, since it uses as much as digits as its factorization.

11456136491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 41.

The spelling of 11456136491 in words is "eleven billion, four hundred fifty-six million, one hundred thirty-six thousand, four hundred ninety-one".