8378228121707 has 4 divisors (see below), whose sum is σ = 8503276302696. Its totient is φ = 8253179940720.

The previous prime is 8378228121691. The next prime is 8378228121811. The reversal of 8378228121707 is 7071218228738.

It is a happy number.

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

It is not a de Polignac number, because 8378228121707 - 2⁴ = 8378228121691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8378228121407) 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, 62524090394 + ... + 62524090527.

It is an arithmetic number, because the mean of its divisors is an integer number (2125819075674).

Almost surely, 2^{8378228121707} is an apocalyptic number.

8378228121707 is a deficient number, since it is larger than the sum of its proper divisors (125048180989).

8378228121707 is a wasteful number, since it uses less digits than its factorization.

8378228121707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125048180988.

The product of its (nonzero) digits is 4214784, while the sum is 56.

The spelling of 8378228121707 in words is "eight trillion, three hundred seventy-eight billion, two hundred twenty-eight million, one hundred twenty-one thousand, seven hundred seven".