1105243039987 has 2 divisors, whose sum is σ = 1105243039988. Its totient is φ = 1105243039986.

The previous prime is 1105243039969. The next prime is 1105243040029. The reversal of 1105243039987 is 7899303425011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1105243039987 - 2¹¹ = 1105243037939 is a prime.

It is not a weakly prime, because it can be changed into another prime (1105243039387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552621519993 + 552621519994.

It is an arithmetic number, because the mean of its divisors is an integer number (552621519994).

Almost surely, 2^{1105243039987} is an apocalyptic number.

1105243039987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105243039987 is an equidigital number, since it uses as much as digits as its factorization.

1105243039987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 1105243039987 in words is "one trillion, one hundred five billion, two hundred forty-three million, thirty-nine thousand, nine hundred eighty-seven".