11564743450391 has 2 divisors, whose sum is σ = 11564743450392. Its totient is φ = 11564743450390.

The previous prime is 11564743450387. The next prime is 11564743450411. The reversal of 11564743450391 is 19305434746511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11564743450391 - 2² = 11564743450387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11564743450291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5782371725195 + 5782371725196.

It is an arithmetic number, because the mean of its divisors is an integer number (5782371725196).

Almost surely, 2^{11564743450391} is an apocalyptic number.

11564743450391 is a deficient number, since it is larger than the sum of its proper divisors (1).

11564743450391 is an equidigital number, since it uses as much as digits as its factorization.

11564743450391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 11564743450391 in words is "eleven trillion, five hundred sixty-four billion, seven hundred forty-three million, four hundred fifty thousand, three hundred ninety-one".