11555001623357 has 2 divisors, whose sum is σ = 11555001623358. Its totient is φ = 11555001623356.

The previous prime is 11555001623323. The next prime is 11555001623371. The reversal of 11555001623357 is 75332610055511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7287591798916 + 4267409824441 = 2699554^2 + 2065771^2 .

It is an emirp because it is prime and its reverse (75332610055511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11555001623357 - 2²⁸ = 11554733187901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11555001623657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5777500811678 + 5777500811679.

It is an arithmetic number, because the mean of its divisors is an integer number (5777500811679).

Almost surely, 2^{11555001623357} is an apocalyptic number.

It is an amenable number.

11555001623357 is a deficient number, since it is larger than the sum of its proper divisors (1).

11555001623357 is an equidigital number, since it uses as much as digits as its factorization.

11555001623357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 472500, while the sum is 44.

Adding to 11555001623357 its reverse (75332610055511), we get a palindrome (86887611678868).

The spelling of 11555001623357 in words is "eleven trillion, five hundred fifty-five billion, one million, six hundred twenty-three thousand, three hundred fifty-seven".