2155532123351 has 2 divisors, whose sum is σ = 2155532123352. Its totient is φ = 2155532123350.

The previous prime is 2155532123293. The next prime is 2155532123363. The reversal of 2155532123351 is 1533212355512.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2155532123351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2155532123051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077766061675 + 1077766061676.

It is an arithmetic number, because the mean of its divisors is an integer number (1077766061676).

Almost surely, 2^{2155532123351} is an apocalyptic number.

2155532123351 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155532123351 is an equidigital number, since it uses as much as digits as its factorization.

2155532123351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135000, while the sum is 38.

Adding to 2155532123351 its reverse (1533212355512), we get a palindrome (3688744478863).

The spelling of 2155532123351 in words is "two trillion, one hundred fifty-five billion, five hundred thirty-two million, one hundred twenty-three thousand, three hundred fifty-one".