6461967752 has 8 divisors (see below), whose sum is σ = 12116189550. Its totient is φ = 3230983872.

The previous prime is 6461967727. The next prime is 6461967761. The reversal of 6461967752 is 2577691646.

It can be written as a sum of positive squares in only one way, i.e., 3852188356 + 2609779396 = 62066^2 + 51086^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 6461967694 and 6461967703.

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 as a sum of consecutive naturals, namely, 403872977 + ... + 403872992.

Almost surely, 2^6461967752 is an apocalyptic number.

It is an amenable number.

6461967752 is a deficient number, since it is larger than the sum of its proper divisors (5654221798).

6461967752 is a wasteful number, since it uses less digits than its factorization.

6461967752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807745975 (or 807745971 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 53.

The square root of 6461967752 is about 80386.3654608168. The cubic root of 6461967752 is about 1862.6085640485.

The spelling of 6461967752 in words is "six billion, four hundred sixty-one million, nine hundred sixty-seven thousand, seven hundred fifty-two".