78896830081 has 4 divisors (see below), whose sum is σ = 78942357972. Its totient is φ = 78851302192.

The previous prime is 78896830049. The next prime is 78896830091. The reversal of 78896830081 is 18003869887.

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 25620804225 + 53276025856 = 160065^2 + 230816^2 .

It is a cyclic number.

It is not a de Polignac number, because 78896830081 - 2⁵ = 78896830049 is a prime.

It is a super-2 number, since 2×78896830081² (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 = 78896829998 and 78896830025.

It is not an unprimeable number, because it can be changed into a prime (78896830021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22761346 + ... + 22764811.

It is an arithmetic number, because the mean of its divisors is an integer number (19735589493).

Almost surely, 2^78896830081 is an apocalyptic number.

It is an amenable number.

78896830081 is a deficient number, since it is larger than the sum of its proper divisors (45527891).

78896830081 is a wasteful number, since it uses less digits than its factorization.

78896830081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45527890.

The product of its (nonzero) digits is 4644864, while the sum is 58.

The spelling of 78896830081 in words is "seventy-eight billion, eight hundred ninety-six million, eight hundred thirty thousand, eighty-one".