663334405652231 has 4 divisors (see below), whose sum is σ = 666701585376552. Its totient is φ = 659967225927912.

The previous prime is 663334405652209. The next prime is 663334405652273. The reversal of 663334405652231 is 132256504433366.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 663334405652231 - 2²² = 663334401457927 is a prime.

It is a super-4 number, since 4×663334405652231⁴ (a number of 60 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663334405652431) 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, 1683589861865 + ... + 1683589862258.

It is an arithmetic number, because the mean of its divisors is an integer number (166675396344138).

Almost surely, 2^{663334405652231} is an apocalyptic number.

663334405652231 is a deficient number, since it is larger than the sum of its proper divisors (3367179724321).

663334405652231 is a wasteful number, since it uses less digits than its factorization.

663334405652231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367179724320.

The product of its (nonzero) digits is 27993600, while the sum is 53.

The spelling of 663334405652231 in words is "six hundred sixty-three trillion, three hundred thirty-four billion, four hundred five million, six hundred fifty-two thousand, two hundred thirty-one".