6461945996 has 48 divisors (see below), whose sum is σ = 12796993440. Its totient is φ = 2828152320.

The previous prime is 6461945983. The next prime is 6461946013. The reversal of 6461945996 is 6995491646.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469160 + ... + 482736.

It is an arithmetic number, because the mean of its divisors is an integer number (266604030).

Almost surely, 2^6461945996 is an apocalyptic number.

It is an amenable number.

6461945996 is a deficient number, since it is larger than the sum of its proper divisors (6335047444).

6461945996 is a wasteful number, since it uses less digits than its factorization.

6461945996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13994 (or 13992 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 59.

The square root of 6461945996 is about 80386.2301392471. The cubic root of 6461945996 is about 1862.6064737173.

The spelling of 6461945996 in words is "six billion, four hundred sixty-one million, nine hundred forty-five thousand, nine hundred ninety-six".