78809445150 has 48 divisors (see below), whose sum is σ = 195477667200. Its totient is φ = 21012600160.

The previous prime is 78809445109. The next prime is 78809445157. The reversal of 78809445150 is 5154490887.

It is a junction number, because it is equal to n+sod(n) for n = 78809445093 and 78809445102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78809445157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1024741 + ... + 1098959.

It is an arithmetic number, because the mean of its divisors is an integer number (4072451400).

Almost surely, 2^78809445150 is an apocalyptic number.

78809445150 is an abundant number, since it is smaller than the sum of its proper divisors (116668222050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78809445150 is a wasteful number, since it uses less digits than its factorization.

78809445150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81313 (or 81308 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 78809445150 in words is "seventy-eight billion, eight hundred nine million, four hundred forty-five thousand, one hundred fifty".