78832545099 has 128 divisors (see below), whose sum is σ = 144577536000. Its totient is φ = 37744237440.

The previous prime is 78832545089. The next prime is 78832545101. The reversal of 78832545099 is 99054523887.

It is not a de Polignac number, because 78832545099 - 2¹¹ = 78832543051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78832545019) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7952304 + ... + 7962210.

It is an arithmetic number, because the mean of its divisors is an integer number (1129512000).

Almost surely, 2^78832545099 is an apocalyptic number.

78832545099 is a deficient number, since it is larger than the sum of its proper divisors (65744990901).

78832545099 is a wasteful number, since it uses less digits than its factorization.

78832545099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9998 (or 9984 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 60.

The spelling of 78832545099 in words is "seventy-eight billion, eight hundred thirty-two million, five hundred forty-five thousand, ninety-nine".