798730639640 has 16 divisors (see below), whose sum is σ = 1797143939280. Its totient is φ = 319492255840.

The previous prime is 798730639591. The next prime is 798730639669. The reversal of 798730639640 is 46936037897.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9984132956 + ... + 9984133035.

It is an arithmetic number, because the mean of its divisors is an integer number (112321496205).

Almost surely, 2^798730639640 is an apocalyptic number.

It is an amenable number.

798730639640 is an abundant number, since it is smaller than the sum of its proper divisors (998413299640).

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

798730639640 is a wasteful number, since it uses less digits than its factorization.

798730639640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19968266002 (or 19968265998 counting only the distinct ones).

The product of its (nonzero) digits is 41150592, while the sum is 62.

The spelling of 798730639640 in words is "seven hundred ninety-eight billion, seven hundred thirty million, six hundred thirty-nine thousand, six hundred forty".