663610664414345 has 16 divisors (see below), whose sum is σ = 796610431683072. Its totient is φ = 530703462744960.

The previous prime is 663610664414311. The next prime is 663610664414377. The reversal of 663610664414345 is 543414466016366.

It is not a de Polignac number, because 663610664414345 - 2²² = 663610660220041 is a prime.

It is a super-2 number, since 2×663610664414345² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255662090 + ... + 258244700.

It is an arithmetic number, because the mean of its divisors is an integer number (49788151980192).

Almost surely, 2^{663610664414345} is an apocalyptic number.

It is an amenable number.

663610664414345 is a deficient number, since it is larger than the sum of its proper divisors (132999767268727).

663610664414345 is a wasteful number, since it uses less digits than its factorization.

663610664414345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2600512.

The product of its (nonzero) digits is 89579520, while the sum is 59.

The spelling of 663610664414345 in words is "six hundred sixty-three trillion, six hundred ten billion, six hundred sixty-four million, four hundred fourteen thousand, three hundred forty-five".