8078144476221 has 12 divisors (see below), whose sum is σ = 11723731533280. Its totient is φ = 5359906286280.

The previous prime is 8078144476211. The next prime is 8078144476223. The reversal of 8078144476221 is 1226744418708.

It is a happy number.

8078144476221 is a `hidden beast` number, since 8 + 0 + 7 + 8 + 1 + 4 + 4 + 4 + 7 + 622 + 1 = 666.

It is not a de Polignac number, because 8078144476221 - 2¹⁰ = 8078144475197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8078144476223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2126945041 + ... + 2126948838.

Almost surely, 2^{8078144476221} is an apocalyptic number.

It is an amenable number.

8078144476221 is a deficient number, since it is larger than the sum of its proper divisors (3645587057059).

8078144476221 is a wasteful number, since it uses less digits than its factorization.

8078144476221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4253894096 (or 4253894093 counting only the distinct ones).

The product of its (nonzero) digits is 4816896, while the sum is 54.

The spelling of 8078144476221 in words is "eight trillion, seventy-eight billion, one hundred forty-four million, four hundred seventy-six thousand, two hundred twenty-one".