78830705660 has 24 divisors (see below), whose sum is σ = 189193693920. Its totient is φ = 27027670464.

The previous prime is 78830705641. The next prime is 78830705683. The reversal of 78830705660 is 6650703887.

It is a junction number, because it is equal to n+sod(n) for n = 78830705599 and 78830705608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281538095 + ... + 281538374.

It is an arithmetic number, because the mean of its divisors is an integer number (7883070580).

Almost surely, 2^78830705660 is an apocalyptic number.

78830705660 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78830705660 is an abundant number, since it is smaller than the sum of its proper divisors (110362988260).

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

78830705660 is a wasteful number, since it uses less digits than its factorization.

78830705660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563076485 (or 563076483 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 78830705660 in words is "seventy-eight billion, eight hundred thirty million, seven hundred five thousand, six hundred sixty".