78009830235 has 12 divisors (see below), whose sum is σ = 135217039152. Its totient is φ = 41605242768.

The previous prime is 78009830233. The next prime is 78009830243. The reversal of 78009830235 is 53203890087.

It is not a de Polignac number, because 78009830235 - 2¹ = 78009830233 is a prime.

It is a super-2 number, since 2×78009830235² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1733551783 = 78009830235 / (7 + 8 + 0 + 0 + 9 + 8 + 3 + 0 + 2 + 3 + 5).

It is not an unprimeable number, because it can be changed into a prime (78009830233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 866775847 + ... + 866775936.

It is an arithmetic number, because the mean of its divisors is an integer number (11268086596).

Almost surely, 2^78009830235 is an apocalyptic number.

78009830235 is a deficient number, since it is larger than the sum of its proper divisors (57207208917).

78009830235 is a wasteful number, since it uses less digits than its factorization.

78009830235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733551794 (or 1733551791 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 78009830235 in words is "seventy-eight billion, nine million, eight hundred thirty thousand, two hundred thirty-five".