6401446566 has 16 divisors (see below), whose sum is σ = 12807761664. Its totient is φ = 2133004104.

The previous prime is 6401446547. The next prime is 6401446603. The reversal of 6401446566 is 6656441046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185650 + ... + 217413.

It is an arithmetic number, because the mean of its divisors is an integer number (800485104).

Almost surely, 2^6401446566 is an apocalyptic number.

6401446566 is an abundant number, since it is smaller than the sum of its proper divisors (6406315098).

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

6401446566 is a wasteful number, since it uses less digits than its factorization.

6401446566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405715.

The product of its (nonzero) digits is 414720, while the sum is 42.

The square root of 6401446566 is about 80009.0405266805. The cubic root of 6401446566 is about 1856.7754055031.

The spelling of 6401446566 in words is "six billion, four hundred one million, four hundred forty-six thousand, five hundred sixty-six".