648601630142 has 16 divisors (see below), whose sum is σ = 987381964800. Its totient is φ = 319509928920.

The previous prime is 648601630097. The next prime is 648601630181. The reversal of 648601630142 is 241036106846.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 648601630142.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8868542 + ... + 8941377.

It is an arithmetic number, because the mean of its divisors is an integer number (61711372800).

Almost surely, 2^648601630142 is an apocalyptic number.

648601630142 is a deficient number, since it is larger than the sum of its proper divisors (338780334658).

648601630142 is a wasteful number, since it uses less digits than its factorization.

648601630142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17810191.

The product of its (nonzero) digits is 165888, while the sum is 41.

Adding to 648601630142 its reverse (241036106846), we get a palindrome (889637736988).

The spelling of 648601630142 in words is "six hundred forty-eight billion, six hundred one million, six hundred thirty thousand, one hundred forty-two".