6410366561 has 4 divisors (see below), whose sum is σ = 6415295124. Its totient is φ = 6405438000.

The previous prime is 6410366551. The next prime is 6410366569. The reversal of 6410366561 is 1656630146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1656630146 = 2 ⋅828315073.

It can be written as a sum of positive squares in 2 ways, for example, as 457318225 + 5953048336 = 21385^2 + 77156^2 .

It is a cyclic number.

It is not a de Polignac number, because 6410366561 - 2⁶ = 6410366497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6410366569) 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, 2462330 + ... + 2464931.

It is an arithmetic number, because the mean of its divisors is an integer number (1603823781).

Almost surely, 2^6410366561 is an apocalyptic number.

It is an amenable number.

6410366561 is a deficient number, since it is larger than the sum of its proper divisors (4928563).

6410366561 is a wasteful number, since it uses less digits than its factorization.

6410366561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4928562.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 6410366561 is about 80064.7647907617. The cubic root of 6410366561 is about 1857.6374367241.

The spelling of 6410366561 in words is "six billion, four hundred ten million, three hundred sixty-six thousand, five hundred sixty-one".