663610664315356 has 12 divisors (see below), whose sum is σ = 1198780554892480. Its totient is φ = 321101934346080.

The previous prime is 663610664315353. The next prime is 663610664315369. The reversal of 663610664315356 is 653513466016366.

It is a super-2 number, since 2×663610664315356² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 663610664315294 and 663610664315303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663610664315353) 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, 2675849452761 + ... + 2675849453008.

Almost surely, 2^{663610664315356} is an apocalyptic number.

It is an amenable number.

663610664315356 is a deficient number, since it is larger than the sum of its proper divisors (535169890577124).

663610664315356 is a wasteful number, since it uses less digits than its factorization.

663610664315356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5351698905804 (or 5351698905802 counting only the distinct ones).

The product of its (nonzero) digits is 125971200, while the sum is 61.

The spelling of 663610664315356 in words is "six hundred sixty-three trillion, six hundred ten billion, six hundred sixty-four million, three hundred fifteen thousand, three hundred fifty-six".