1355332143973 has 2 divisors, whose sum is σ = 1355332143974. Its totient is φ = 1355332143972.

The previous prime is 1355332143883. The next prime is 1355332144007. The reversal of 1355332143973 is 3793412335531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 987366157569 + 367965986404 = 993663^2 + 606602^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1355332143973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1355332143073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677666071986 + 677666071987.

It is an arithmetic number, because the mean of its divisors is an integer number (677666071987).

Almost surely, 2^{1355332143973} is an apocalyptic number.

It is an amenable number.

1355332143973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355332143973 is an equidigital number, since it uses as much as digits as its factorization.

1355332143973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3061800, while the sum is 49.

The spelling of 1355332143973 in words is "one trillion, three hundred fifty-five billion, three hundred thirty-two million, one hundred forty-three thousand, nine hundred seventy-three".