1563682770945 has 12 divisors (see below), whose sum is σ = 2710383469716. Its totient is φ = 833964144480.

The previous prime is 1563682770943. The next prime is 1563682770961. The reversal of 1563682770945 is 5490772863651.

1563682770945 is a `hidden beast` number, since 1 + 563 + 6 + 8 + 27 + 7 + 0 + 9 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1061194600449 + 502488170496 = 1030143^2 + 708864^2 .

It is not a de Polignac number, because 1563682770945 - 2¹ = 1563682770943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1563682770943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17374252966 + ... + 17374253055.

It is an arithmetic number, because the mean of its divisors is an integer number (225865289143).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1563682770945 = 3127365541890, but 3⋅1563682770945 = 4691048312835 is not.

Almost surely, 2^{1563682770945} is an apocalyptic number.

1563682770945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1563682770945 is a deficient number, since it is larger than the sum of its proper divisors (1146700698771).

1563682770945 is a wasteful number, since it uses less digits than its factorization.

1563682770945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34748506032 (or 34748506029 counting only the distinct ones).

The product of its (nonzero) digits is 76204800, while the sum is 63.

The spelling of 1563682770945 in words is "one trillion, five hundred sixty-three billion, six hundred eighty-two million, seven hundred seventy thousand, nine hundred forty-five".