6668315495453 has 4 divisors (see below), whose sum is σ = 6671127946368. Its totient is φ = 6665503044540.

The previous prime is 6668315495411. The next prime is 6668315495533. The reversal of 6668315495453 is 3545945138666.

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 6668315495453 - 2²² = 6668311301149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6668315495453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668315495753) 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, 1406221901 + ... + 1406226642.

It is an arithmetic number, because the mean of its divisors is an integer number (1667781986592).

Almost surely, 2^{6668315495453} is an apocalyptic number.

It is an amenable number.

6668315495453 is a deficient number, since it is larger than the sum of its proper divisors (2812450915).

6668315495453 is a wasteful number, since it uses less digits than its factorization.

6668315495453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812450914.

The product of its digits is 279936000, while the sum is 65.

The spelling of 6668315495453 in words is "six trillion, six hundred sixty-eight billion, three hundred fifteen million, four hundred ninety-five thousand, four hundred fifty-three".