6415664665146 has 48 divisors (see below), whose sum is σ = 14104166412000. Its totient is φ = 1944098275680.

The previous prime is 6415664665141. The next prime is 6415664665169.

6415664665146 is nontrivially palindromic in base 10.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6415664665146.

It is not an unprimeable number, because it can be changed into a prime (6415664665141) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 53772585 + ... + 53891763.

It is an arithmetic number, because the mean of its divisors is an integer number (293836800250).

Almost surely, 2^{6415664665146} is an apocalyptic number.

6415664665146 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6415664665146 is an abundant number, since it is smaller than the sum of its proper divisors (7688501746854).

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

6415664665146 is a wasteful number, since it uses less digits than its factorization.

6415664665146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193355 (or 193344 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 60.

The spelling of 6415664665146 in words is "six trillion, four hundred fifteen billion, six hundred sixty-four million, six hundred sixty-five thousand, one hundred forty-six".