78608581881 has 8 divisors (see below), whose sum is σ = 104865172224. Its totient is φ = 52378856400.

The previous prime is 78608581873. The next prime is 78608581889. The reversal of 78608581881 is 18818580687.

It is an interprime number because it is at equal distance from previous prime (78608581873) and next prime (78608581889).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78608581881 - 2³ = 78608581873 is a prime.

It is a super-2 number, since 2×78608581881² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78608581889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6709386 + ... + 6721091.

It is an arithmetic number, because the mean of its divisors is an integer number (13108146528).

Almost surely, 2^78608581881 is an apocalyptic number.

It is an amenable number.

78608581881 is a deficient number, since it is larger than the sum of its proper divisors (26256590343).

78608581881 is a wasteful number, since it uses less digits than its factorization.

78608581881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13432431.

The product of its (nonzero) digits is 6881280, while the sum is 60.

The spelling of 78608581881 in words is "seventy-eight billion, six hundred eight million, five hundred eighty-one thousand, eight hundred eighty-one".