10320312255561 has 128 divisors (see below), whose sum is σ = 19322451763200. Its totient is φ = 5288358240000.

The previous prime is 10320312255529. The next prime is 10320312255563. The reversal of 10320312255561 is 16555221302301.

10320312255561 is a `hidden beast` number, since 1 + 0 + 3 + 20 + 3 + 1 + 22 + 55 + 561 = 666.

It is not a de Polignac number, because 10320312255561 - 2⁵ = 10320312255529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10320312255563) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 56392996 + ... + 56575706.

It is an arithmetic number, because the mean of its divisors is an integer number (150956654400).

Almost surely, 2^{10320312255561} is an apocalyptic number.

10320312255561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10320312255561 is a deficient number, since it is larger than the sum of its proper divisors (9002139507639).

10320312255561 is a wasteful number, since it uses less digits than its factorization.

10320312255561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183108 (or 183102 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

Adding to 10320312255561 its reverse (16555221302301), we get a palindrome (26875533557862).

The spelling of 10320312255561 in words is "ten trillion, three hundred twenty billion, three hundred twelve million, two hundred fifty-five thousand, five hundred sixty-one".