78299683309 has 8 divisors (see below), whose sum is σ = 80422431488. Its totient is φ = 76177279440.

The previous prime is 78299683303. The next prime is 78299683321. The reversal of 78299683309 is 90338699287.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78299683309 - 2³¹ = 76152199661 is a prime.

It is a super-2 number, since 2×78299683309² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78299683303) 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 7 ways as a sum of consecutive naturals, for example, 413704 + ... + 572494.

It is an arithmetic number, because the mean of its divisors is an integer number (10052803936).

Almost surely, 2^78299683309 is an apocalyptic number.

It is an amenable number.

78299683309 is a deficient number, since it is larger than the sum of its proper divisors (2122748179).

78299683309 is a wasteful number, since it uses less digits than its factorization.

78299683309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172155.

The product of its (nonzero) digits is 35271936, while the sum is 64.

The spelling of 78299683309 in words is "seventy-eight billion, two hundred ninety-nine million, six hundred eighty-three thousand, three hundred nine".