11623551551597 has 2 divisors, whose sum is σ = 11623551551598. Its totient is φ = 11623551551596.

The previous prime is 11623551551581. The next prime is 11623551551681. The reversal of 11623551551597 is 79515515532611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11459450402761 + 164101148836 = 3385181^2 + 405094^2 .

It is a cyclic number.

It is not a de Polignac number, because 11623551551597 - 2⁴ = 11623551551581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11623551551897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5811775775798 + 5811775775799.

It is an arithmetic number, because the mean of its divisors is an integer number (5811775775799).

Almost surely, 2^{11623551551597} is an apocalyptic number.

It is an amenable number.

11623551551597 is a deficient number, since it is larger than the sum of its proper divisors (1).

11623551551597 is an equidigital number, since it uses as much as digits as its factorization.

11623551551597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7087500, while the sum is 56.

The spelling of 11623551551597 in words is "eleven trillion, six hundred twenty-three billion, five hundred fifty-one million, five hundred fifty-one thousand, five hundred ninety-seven".