78995589827 has 8 divisors (see below), whose sum is σ = 98488008192. Its totient is φ = 61555005000.

The previous prime is 78995589821. The next prime is 78995589839. The reversal of 78995589827 is 72898559987.

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 78995589827 - 2¹⁰ = 78995588803 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (77), and also a Moran number because the ratio is a prime number: 1025916751 = 78995589827 / (7 + 8 + 9 + 9 + 5 + 5 + 8 + 9 + 8 + 2 + 7).

It is not an unprimeable number, because it can be changed into a prime (78995589821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512958299 + ... + 512958452.

It is an arithmetic number, because the mean of its divisors is an integer number (12311001024).

Almost surely, 2^78995589827 is an apocalyptic number.

78995589827 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

78995589827 is a deficient number, since it is larger than the sum of its proper divisors (19492418365).

78995589827 is a wasteful number, since it uses less digits than its factorization.

78995589827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025916769.

The product of its digits is 914457600, while the sum is 77.

The spelling of 78995589827 in words is "seventy-eight billion, nine hundred ninety-five million, five hundred eighty-nine thousand, eight hundred twenty-seven".