845663130050 has 18 divisors (see below), whose sum is σ = 1572945516729. Its totient is φ = 338262651000.

The previous prime is 845663130043. The next prime is 845663130149. The reversal of 845663130050 is 50031366548.

It can be written as a sum of positive squares in 2 ways, for example, as 828749867449 + 16913262601 = 910357^2 + 130051^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=650255.

It is a super-2 number, since 2×845663130050² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6437525 + ... + 6567575.

Almost surely, 2^845663130050 is an apocalyptic number.

845663130050 is a deficient number, since it is larger than the sum of its proper divisors (727282386679).

845663130050 is an frugal number, since it uses more digits than its factorization.

845663130050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260114 (or 130058 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

Adding to 845663130050 its reverse (50031366548), we get a palindrome (895694496598).

The spelling of 845663130050 in words is "eight hundred forty-five billion, six hundred sixty-three million, one hundred thirty thousand, fifty".