6561079446 has 8 divisors (see below), whose sum is σ = 13122158904. Its totient is φ = 2187026480.

The previous prime is 6561079439. The next prime is 6561079457. The reversal of 6561079446 is 6449701656.

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

6561079446 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 6561079395 and 6561079404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546756615 + ... + 546756626.

It is an arithmetic number, because the mean of its divisors is an integer number (1640269863).

Almost surely, 2^6561079446 is an apocalyptic number.

6561079446 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6561079446 is a wasteful number, since it uses less digits than its factorization.

6561079446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093513246.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 6561079446 is about 81000.4904059229. The cubic root of 6561079446 is about 1872.0829969274.

The spelling of 6561079446 in words is "six billion, five hundred sixty-one million, seventy-nine thousand, four hundred forty-six".