6461570655064 has 128 divisors (see below), whose sum is σ = 15466443264000. Its totient is φ = 2466896598144.

The previous prime is 6461570655053. The next prime is 6461570655073. The reversal of 6461570655064 is 4605560751646.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6461570654996 and 6461570655014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 793774 + ... + 3681469.

It is an arithmetic number, because the mean of its divisors is an integer number (120831588000).

Almost surely, 2^{6461570655064} is an apocalyptic number.

It is an amenable number.

6461570655064 is an abundant number, since it is smaller than the sum of its proper divisors (9004872608936).

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

6461570655064 is a wasteful number, since it uses less digits than its factorization.

6461570655064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4475357 (or 4475353 counting only the distinct ones).

The product of its (nonzero) digits is 18144000, while the sum is 55.

The spelling of 6461570655064 in words is "six trillion, four hundred sixty-one billion, five hundred seventy million, six hundred fifty-five thousand, sixty-four".