1563045031243 has 4 divisors (see below), whose sum is σ = 1563096533440. Its totient is φ = 1562993529048.

The previous prime is 1563045031231. The next prime is 1563045031333. The reversal of 1563045031243 is 3421305403651.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1563045031243 - 2¹⁷ = 1563044900171 is a prime.

It is a super-2 number, since 2×1563045031243² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1563045031213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25705548 + ... + 25766281.

It is an arithmetic number, because the mean of its divisors is an integer number (390774133360).

Almost surely, 2^{1563045031243} is an apocalyptic number.

1563045031243 is a deficient number, since it is larger than the sum of its proper divisors (51502197).

1563045031243 is an equidigital number, since it uses as much as digits as its factorization.

1563045031243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51502196.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 1563045031243 in words is "one trillion, five hundred sixty-three billion, forty-five million, thirty-one thousand, two hundred forty-three".