2155433101243 has 2 divisors, whose sum is σ = 2155433101244. Its totient is φ = 2155433101242.

The previous prime is 2155433101231. The next prime is 2155433101319. The reversal of 2155433101243 is 3421013345512.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2155433101243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2155433101199 and 2155433101208.

It is not a weakly prime, because it can be changed into another prime (2155433101543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077716550621 + 1077716550622.

It is an arithmetic number, because the mean of its divisors is an integer number (1077716550622).

Almost surely, 2^{2155433101243} is an apocalyptic number.

2155433101243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155433101243 is an equidigital number, since it uses as much as digits as its factorization.

2155433101243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 2155433101243 its reverse (3421013345512), we get a palindrome (5576446446755).

The spelling of 2155433101243 in words is "two trillion, one hundred fifty-five billion, four hundred thirty-three million, one hundred one thousand, two hundred forty-three".