99378393245 has 4 divisors (see below), whose sum is σ = 119254071900. Its totient is φ = 79502714592.

The previous prime is 99378393241. The next prime is 99378393271. The reversal of 99378393245 is 54239387399.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31862607001 + 67515786244 = 178501^2 + 259838^2 .

It is a cyclic number.

It is not a de Polignac number, because 99378393245 - 2² = 99378393241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99378393241) 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, 9937839320 + ... + 9937839329.

It is an arithmetic number, because the mean of its divisors is an integer number (29813517975).

Almost surely, 2^99378393245 is an apocalyptic number.

It is an amenable number.

99378393245 is a deficient number, since it is larger than the sum of its proper divisors (19875678655).

99378393245 is a wasteful number, since it uses less digits than its factorization.

99378393245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19875678654.

The product of its digits is 44089920, while the sum is 62.

The spelling of 99378393245 in words is "ninety-nine billion, three hundred seventy-eight million, three hundred ninety-three thousand, two hundred forty-five".