663431625414053 has 8 divisors (see below), whose sum is σ = 675988786606968. Its totient is φ = 650875930271424.

The previous prime is 663431625414031. The next prime is 663431625414067. The reversal of 663431625414053 is 350414526134366.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 213582499549444 + 449849125864609 = 14614462^2 + 21209647^2 .

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 663431625414053 - 2¹² = 663431625409957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 663431625413986 and 663431625414004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663431625414023) 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, 365598926 + ... + 367409087.

It is an arithmetic number, because the mean of its divisors is an integer number (84498598325871).

Almost surely, 2^{663431625414053} is an apocalyptic number.

It is an amenable number.

663431625414053 is a deficient number, since it is larger than the sum of its proper divisors (12557161192915).

663431625414053 is a wasteful number, since it uses less digits than its factorization.

663431625414053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733025143.

The product of its (nonzero) digits is 18662400, while the sum is 53.

The spelling of 663431625414053 in words is "six hundred sixty-three trillion, four hundred thirty-one billion, six hundred twenty-five million, four hundred fourteen thousand, fifty-three".