6411051365721 has 64 divisors (see below), whose sum is σ = 9707830110720. Its totient is φ = 3746878248960.

The previous prime is 6411051365699. The next prime is 6411051365743. The reversal of 6411051365721 is 1275631501146.

6411051365721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6411051365699) and next prime (6411051365743).

It is not a de Polignac number, because 6411051365721 - 2⁹ = 6411051365209 is a prime.

It is a super-2 number, since 2×6411051365721² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6411051365321) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1979511 + ... + 4091523.

It is an arithmetic number, because the mean of its divisors is an integer number (151684845480).

Almost surely, 2^{6411051365721} is an apocalyptic number.

It is an amenable number.

6411051365721 is a deficient number, since it is larger than the sum of its proper divisors (3296778744999).

6411051365721 is a wasteful number, since it uses less digits than its factorization.

6411051365721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112146.

The product of its (nonzero) digits is 151200, while the sum is 42.

Adding to 6411051365721 its reverse (1275631501146), we get a palindrome (7686682866867).

The spelling of 6411051365721 in words is "six trillion, four hundred eleven billion, fifty-one million, three hundred sixty-five thousand, seven hundred twenty-one".