1101543398941 has 2 divisors, whose sum is σ = 1101543398942. Its totient is φ = 1101543398940.

The previous prime is 1101543398933. The next prime is 1101543399037. The reversal of 1101543398941 is 1498933451011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 998058942841 + 103484456100 = 999029^2 + 321690^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101543398941 - 2³ = 1101543398933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101543368941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550771699470 + 550771699471.

It is an arithmetic number, because the mean of its divisors is an integer number (550771699471).

Almost surely, 2^{1101543398941} is an apocalyptic number.

It is an amenable number.

1101543398941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101543398941 is an equidigital number, since it uses as much as digits as its factorization.

1101543398941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 1101543398941 in words is "one trillion, one hundred one billion, five hundred forty-three million, three hundred ninety-eight thousand, nine hundred forty-one".