631545558002 has 16 divisors (see below), whose sum is σ = 1003720299192. Its totient is φ = 296997212160.

The previous prime is 631545558001. The next prime is 631545558023. The reversal of 631545558002 is 200855545136.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 556574189521 + 74971368481 = 746039^2 + 273809^2 .

It is not an unprimeable number, because it can be changed into a prime (631545558001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6220703 + ... + 6321410.

Almost surely, 2^631545558002 is an apocalyptic number.

631545558002 is a deficient number, since it is larger than the sum of its proper divisors (372174741190).

631545558002 is a wasteful number, since it uses less digits than its factorization.

631545558002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12543613.

The product of its (nonzero) digits is 720000, while the sum is 44.

The spelling of 631545558002 in words is "six hundred thirty-one billion, five hundred forty-five million, five hundred fifty-eight thousand, two".