78688895579 has 16 divisors (see below), whose sum is σ = 91646408448. Its totient is φ = 66160984032.

The previous prime is 78688895569. The next prime is 78688895609. The reversal of 78688895579 is 97559888687.

It is a cyclic number.

It is not a de Polignac number, because 78688895579 - 2¹⁶ = 78688830043 is a prime.

It is a super-3 number, since 3×78688895579³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (78688895569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1963904 + ... + 2003570.

It is an arithmetic number, because the mean of its divisors is an integer number (5727900528).

Almost surely, 2^78688895579 is an apocalyptic number.

78688895579 is a deficient number, since it is larger than the sum of its proper divisors (12957512869).

78688895579 is a wasteful number, since it uses less digits than its factorization.

78688895579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45074.

The product of its digits is 2438553600, while the sum is 80.

The spelling of 78688895579 in words is "seventy-eight billion, six hundred eighty-eight million, eight hundred ninety-five thousand, five hundred seventy-nine".