10643451505216 has 28 divisors (see below), whose sum is σ = 21635735648940. Its totient is φ = 5191927562240.

The previous prime is 10643451505187. The next prime is 10643451505217. The reversal of 10643451505216 is 61250515434601.

It can be written as a sum of positive squares in 2 ways, for example, as 3891561071616 + 6751890433600 = 1972704^2 + 2598440^2 .

It is a super-2 number, since 2×10643451505216² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10643451505217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2028094081 + ... + 2028099328.

It is an arithmetic number, because the mean of its divisors is an integer number (772704844605).

Almost surely, 2^{10643451505216} is an apocalyptic number.

10643451505216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

10643451505216 is an abundant number, since it is smaller than the sum of its proper divisors (10992284143724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10643451505216 is an equidigital number, since it uses as much as digits as its factorization.

10643451505216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056193462 (or 4056193452 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 43.

Adding to 10643451505216 its reverse (61250515434601), we get a palindrome (71893966939817).

The spelling of 10643451505216 in words is "ten trillion, six hundred forty-three billion, four hundred fifty-one million, five hundred five thousand, two hundred sixteen".