6415664665147 has 8 divisors (see below), whose sum is σ = 6506073830880. Its totient is φ = 6325256824320.

The previous prime is 6415664665141. The next prime is 6415664665169. The reversal of 6415664665147 is 7415664665146.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6415664665147 - 2³¹ = 6413517181499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6415664665141) 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, 13409179 + ... + 13879387.

It is an arithmetic number, because the mean of its divisors is an integer number (813259228860).

Almost surely, 2^{6415664665147} is an apocalyptic number.

6415664665147 is a deficient number, since it is larger than the sum of its proper divisors (90409165733).

6415664665147 is a wasteful number, since it uses less digits than its factorization.

6415664665147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662453.

The product of its digits is 87091200, while the sum is 61.

Subtracting 6415664665147 from its reverse (7415664665146), we obtain a palindrome (999999999999).

The spelling of 6415664665147 in words is "six trillion, four hundred fifteen billion, six hundred sixty-four million, six hundred sixty-five thousand, one hundred forty-seven".