663213372853 has 4 divisors (see below), whose sum is σ = 663243619168. Its totient is φ = 663183126540.

The previous prime is 663213372841. The next prime is 663213372863. The reversal of 663213372853 is 358273312366.

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, and also an emirpimes, since its reverse is a distinct semiprime: 358273312366 = 2 ⋅179136656183.

It is a cyclic number.

It is not a de Polignac number, because 663213372853 - 2²⁹ = 662676501941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 663213372797 and 663213372806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663213372823) 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, 15090243 + ... + 15134128.

It is an arithmetic number, because the mean of its divisors is an integer number (165810904792).

Almost surely, 2^663213372853 is an apocalyptic number.

It is an amenable number.

663213372853 is a deficient number, since it is larger than the sum of its proper divisors (30246315).

663213372853 is a wasteful number, since it uses less digits than its factorization.

663213372853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30246314.

The product of its digits is 3265920, while the sum is 49.

The spelling of 663213372853 in words is "six hundred sixty-three billion, two hundred thirteen million, three hundred seventy-two thousand, eight hundred fifty-three".