8278061672 has 16 divisors (see below), whose sum is σ = 15522332100. Its totient is φ = 4138773120.

The previous prime is 8278061647. The next prime is 8278061677. The reversal of 8278061672 is 2761608728.

It can be written as a sum of positive squares in 2 ways, for example, as 7688834596 + 589227076 = 87686^2 + 24274^2 .

It is not an unprimeable number, because it can be changed into a prime (8278061677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226772 + ... + 260732.

Almost surely, 2^8278061672 is an apocalyptic number.

It is an amenable number.

8278061672 is a deficient number, since it is larger than the sum of its proper divisors (7244270428).

8278061672 is a wasteful number, since it uses less digits than its factorization.

8278061672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64436 (or 64432 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 8278061672 is about 90983.8539082622. The cubic root of 8278061672 is about 2022.9084066019.

The spelling of 8278061672 in words is "eight billion, two hundred seventy-eight million, sixty-one thousand, six hundred seventy-two".