663135263406036 has 36 divisors (see below), whose sum is σ = 1676270898885492. Its totient is φ = 221043463663104.

The previous prime is 663135263405971. The next prime is 663135263406037. The reversal of 663135263406036 is 630604362531366.

It is a happy number.

663135263406036 is a `hidden beast` number, since 6 + 6 + 3 + 1 + 3 + 5 + 26 + 3 + 4 + 0 + 603 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 309104922704400 + 354030340701636 = 17581380^2 + 18815694^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663135263406037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62699805 + ... + 72508868.

It is an arithmetic number, because the mean of its divisors is an integer number (46563080524597).

Almost surely, 2^{663135263406036} is an apocalyptic number.

It is an amenable number.

663135263406036 is an abundant number, since it is smaller than the sum of its proper divisors (1013135635479456).

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

663135263406036 is a wasteful number, since it uses less digits than its factorization.

663135263406036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135344920 (or 135344915 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 54.

The spelling of 663135263406036 in words is "six hundred sixty-three trillion, one hundred thirty-five billion, two hundred sixty-three million, four hundred six thousand, thirty-six".