10721645223145 has 8 divisors (see below), whose sum is σ = 12903052005504. Its totient is φ = 8552597686704.

The previous prime is 10721645223127. The next prime is 10721645223167. The reversal of 10721645223145 is 54132254612701.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10721645223145 - 2²⁹ = 10721108352233 is a prime.

It is a super-2 number, since 2×10721645223145² (a number of 27 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 (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3089809569 + ... + 3089813038.

It is an arithmetic number, because the mean of its divisors is an integer number (1612881500688).

Almost surely, 2^{10721645223145} is an apocalyptic number.

It is an amenable number.

10721645223145 is a deficient number, since it is larger than the sum of its proper divisors (2181406782359).

10721645223145 is an equidigital number, since it uses as much as digits as its factorization.

10721645223145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6179622959.

The product of its (nonzero) digits is 403200, while the sum is 43.

Adding to 10721645223145 its reverse (54132254612701), we get a palindrome (64853899835846).

The spelling of 10721645223145 in words is "ten trillion, seven hundred twenty-one billion, six hundred forty-five million, two hundred twenty-three thousand, one hundred forty-five".