9664378360453 has 4 divisors (see below), whose sum is σ = 9870003432000. Its totient is φ = 9458753288908.

The previous prime is 9664378360451. The next prime is 9664378360459. The reversal of 9664378360453 is 3540638734669.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9664378360453 - 2¹ = 9664378360451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9664378360451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102812535703 + ... + 102812535796.

It is an arithmetic number, because the mean of its divisors is an integer number (2467500858000).

Almost surely, 2^{9664378360453} is an apocalyptic number.

It is an amenable number.

9664378360453 is a deficient number, since it is larger than the sum of its proper divisors (205625071547).

9664378360453 is a wasteful number, since it uses less digits than its factorization.

9664378360453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205625071546.

The product of its (nonzero) digits is 235146240, while the sum is 64.

The spelling of 9664378360453 in words is "nine trillion, six hundred sixty-four billion, three hundred seventy-eight million, three hundred sixty thousand, four hundred fifty-three".