6465474745646 has 16 divisors (see below), whose sum is σ = 11085707439744. Its totient is φ = 2770408636344.

The previous prime is 6465474745607. The next prime is 6465474745649.

6465474745646 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6465474745649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42347060 + ... + 42499463.

It is an arithmetic number, because the mean of its divisors is an integer number (692856714984).

Almost surely, 2^{6465474745646} is an apocalyptic number.

6465474745646 is a deficient number, since it is larger than the sum of its proper divisors (4620232694098).

6465474745646 is a wasteful number, since it uses less digits than its factorization.

6465474745646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84851975.

The product of its digits is 1625702400, while the sum is 68.

The spelling of 6465474745646 in words is "six trillion, four hundred sixty-five billion, four hundred seventy-four million, seven hundred forty-five thousand, six hundred forty-six".