1355172461243 has 2 divisors, whose sum is σ = 1355172461244. Its totient is φ = 1355172461242.

The previous prime is 1355172461197. The next prime is 1355172461249. The reversal of 1355172461243 is 3421642715531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1355172461243 - 2²⁶ = 1355105352379 is a prime.

It is a super-2 number, since 2×1355172461243² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1355172461194 and 1355172461203.

It is not a weakly prime, because it can be changed into another prime (1355172461249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677586230621 + 677586230622.

It is an arithmetic number, because the mean of its divisors is an integer number (677586230622).

Almost surely, 2^{1355172461243} is an apocalyptic number.

1355172461243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355172461243 is an equidigital number, since it uses as much as digits as its factorization.

1355172461243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 44.

The spelling of 1355172461243 in words is "one trillion, three hundred fifty-five billion, one hundred seventy-two million, four hundred sixty-one thousand, two hundred forty-three".