10451323611521 has 16 divisors (see below), whose sum is σ = 11368737301824. Its totient is φ = 9550250681664.

The previous prime is 10451323611517. The next prime is 10451323611559. The reversal of 10451323611521 is 12511632315401.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10451323611521 - 2² = 10451323611517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10451323610521) 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 15 ways as a sum of consecutive naturals, for example, 826331 + ... + 4646016.

It is an arithmetic number, because the mean of its divisors is an integer number (710546081364).

Almost surely, 2^{10451323611521} is an apocalyptic number.

It is an amenable number.

10451323611521 is a deficient number, since it is larger than the sum of its proper divisors (917413690303).

10451323611521 is a wasteful number, since it uses less digits than its factorization.

10451323611521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5473840.

The product of its (nonzero) digits is 21600, while the sum is 35.

Adding to 10451323611521 its reverse (12511632315401), we get a palindrome (22962955926922).

The spelling of 10451323611521 in words is "ten trillion, four hundred fifty-one billion, three hundred twenty-three million, six hundred eleven thousand, five hundred twenty-one".