78999110122 has 8 divisors (see below), whose sum is σ = 118503883872. Its totient is φ = 39497815500.

The previous prime is 78999110111. The next prime is 78999110123. The reversal of 78999110122 is 22101199987.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (78999110123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 812254 + ... + 904297.

It is an arithmetic number, because the mean of its divisors is an integer number (14812985484).

Almost surely, 2^78999110122 is an apocalyptic number.

78999110122 is a deficient number, since it is larger than the sum of its proper divisors (39504773750).

78999110122 is a wasteful number, since it uses less digits than its factorization.

78999110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739564.

The product of its (nonzero) digits is 163296, while the sum is 49.

The spelling of 78999110122 in words is "seventy-eight billion, nine hundred ninety-nine million, one hundred ten thousand, one hundred twenty-two".