663268498832466 has 20 divisors (see below), whose sum is σ = 1486212747384222. Its totient is φ = 221089499610768.

The previous prime is 663268498832417. The next prime is 663268498832479. The reversal of 663268498832466 is 664238894862366.

663268498832466 is a `hidden beast` number, since 6 + 6 + 3 + 2 + 6 + 8 + 49 + 88 + 32 + 466 = 666.

It can be written as a sum of positive squares in only one way, i.e., 346496669165241 + 316771829667225 = 18614421^2 + 17798085^2 .

It is a Harshad number since it is a multiple of its sum of digits (81).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2047124996235 + ... + 2047124996558.

Almost surely, 2^{663268498832466} is an apocalyptic number.

663268498832466 is an abundant number, since it is smaller than the sum of its proper divisors (822944248551756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663268498832466 is a wasteful number, since it uses less digits than its factorization.

663268498832466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4094249992807 (or 4094249992798 counting only the distinct ones).

The product of its digits is 20639121408, while the sum is 81.

The spelling of 663268498832466 in words is "six hundred sixty-three trillion, two hundred sixty-eight billion, four hundred ninety-eight million, eight hundred thirty-two thousand, four hundred sixty-six".