78328200669 has 16 divisors (see below), whose sum is σ = 105989157120. Its totient is φ = 51445892160.

The previous prime is 78328200661. The next prime is 78328200697. The reversal of 78328200669 is 96600282387.

It is not a de Polignac number, because 78328200669 - 2³ = 78328200661 is a prime.

It is a super-2 number, since 2×78328200669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78328200661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249202 + ... + 467715.

It is an arithmetic number, because the mean of its divisors is an integer number (6624322320).

Almost surely, 2^78328200669 is an apocalyptic number.

78328200669 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

78328200669 is a deficient number, since it is larger than the sum of its proper divisors (27660956451).

78328200669 is a wasteful number, since it uses less digits than its factorization.

78328200669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717460.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 78328200669 in words is "seventy-eight billion, three hundred twenty-eight million, two hundred thousand, six hundred sixty-nine".