78366808420108 has 24 divisors (see below), whose sum is σ = 147692125627200. Its totient is φ = 36169092234240.

The previous prime is 78366808420093. The next prime is 78366808420157. The reversal of 78366808420108 is 80102480866387.

It is a super-2 number, since 2×78366808420108² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5263788 + ... + 13580908.

It is an arithmetic number, because the mean of its divisors is an integer number (6153838567800).

Almost surely, 2^{78366808420108} is an apocalyptic number.

It is an amenable number.

78366808420108 is a deficient number, since it is larger than the sum of its proper divisors (69325317207092).

78366808420108 is a wasteful number, since it uses less digits than its factorization.

78366808420108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8498337 (or 8498335 counting only the distinct ones).

The product of its (nonzero) digits is 24772608, while the sum is 61.

The spelling of 78366808420108 in words is "seventy-eight trillion, three hundred sixty-six billion, eight hundred eight million, four hundred twenty thousand, one hundred eight".