78559070069 has 4 divisors (see below), whose sum is σ = 79086312300. Its totient is φ = 78031827840.

The previous prime is 78559070003. The next prime is 78559070077. The reversal of 78559070069 is 96007095587.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10822240900 + 67736829169 = 104030^2 + 260263^2 .

It is a cyclic number.

It is not a de Polignac number, because 78559070069 - 2¹² = 78559065973 is a prime.

It is a super-2 number, since 2×78559070069² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78559069996 and 78559070023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78559070099) 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 3 ways as a sum of consecutive naturals, for example, 263620892 + ... + 263621189.

It is an arithmetic number, because the mean of its divisors is an integer number (19771578075).

Almost surely, 2^78559070069 is an apocalyptic number.

It is an amenable number.

78559070069 is a deficient number, since it is larger than the sum of its proper divisors (527242231).

78559070069 is a wasteful number, since it uses less digits than its factorization.

78559070069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527242230.

The product of its (nonzero) digits is 4762800, while the sum is 56.

The spelling of 78559070069 in words is "seventy-eight billion, five hundred fifty-nine million, seventy thousand, sixty-nine".