648802810742 has 4 divisors (see below), whose sum is σ = 973204216116. Its totient is φ = 324401405370.

The previous prime is 648802810741. The next prime is 648802810829. The reversal of 648802810742 is 247018208846.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648802810741) by changing a digit.

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 as a sum of consecutive naturals, namely, 162200702684 + ... + 162200702687.

It is an arithmetic number, because the mean of its divisors is an integer number (243301054029).

Almost surely, 2^648802810742 is an apocalyptic number.

648802810742 is a deficient number, since it is larger than the sum of its proper divisors (324401405374).

648802810742 is a wasteful number, since it uses less digits than its factorization.

648802810742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324401405373.

The product of its (nonzero) digits is 1376256, while the sum is 50.

The spelling of 648802810742 in words is "six hundred forty-eight billion, eight hundred two million, eight hundred ten thousand, seven hundred forty-two".