78830826009 has 32 divisors (see below), whose sum is σ = 113564419584. Its totient is φ = 48352343040.

The previous prime is 78830825971. The next prime is 78830826023. The reversal of 78830826009 is 90062803887.

It is not a de Polignac number, because 78830826009 - 2¹⁶ = 78830760473 is a prime.

It is a super-2 number, since 2×78830826009² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78830826049) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 21938317 + ... + 21941909.

It is an arithmetic number, because the mean of its divisors is an integer number (3548888112).

Almost surely, 2^78830826009 is an apocalyptic number.

It is an amenable number.

78830826009 is a deficient number, since it is larger than the sum of its proper divisors (34733593575).

78830826009 is a wasteful number, since it uses less digits than its factorization.

78830826009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5297.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 78830826009 in words is "seventy-eight billion, eight hundred thirty million, eight hundred twenty-six thousand, nine".