6445550632 has 32 divisors (see below), whose sum is σ = 12385800000. Its totient is φ = 3142742400.

The previous prime is 6445550599. The next prime is 6445550641. The reversal of 6445550632 is 2360555446.

It is a happy 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, 1286869 + ... + 1291867.

It is an arithmetic number, because the mean of its divisors is an integer number (387056250).

Almost surely, 2^6445550632 is an apocalyptic number.

It is an amenable number.

6445550632 is a deficient number, since it is larger than the sum of its proper divisors (5940249368).

6445550632 is a wasteful number, since it uses less digits than its factorization.

6445550632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8977 (or 8973 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 40.

The square root of 6445550632 is about 80284.1866870432. The cubic root of 6445550632 is about 1861.0298601662.

The spelling of 6445550632 in words is "six billion, four hundred forty-five million, five hundred fifty thousand, six hundred thirty-two".