8538470077777 has 4 divisors (see below), whose sum is σ = 8538536100276. Its totient is φ = 8538404055280.

The previous prime is 8538470077751. The next prime is 8538470077789. The reversal of 8538470077777 is 7777700748358.

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 2773553829201 + 5764916248576 = 1665399^2 + 2401024^2 .

It is a cyclic number.

It is not a de Polignac number, because 8538470077777 - 2³⁹ = 7988714263889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8538470074777) 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, 32816878 + ... + 33076039.

It is an arithmetic number, because the mean of its divisors is an integer number (2134634025069).

Almost surely, 2^{8538470077777} is an apocalyptic number.

It is an amenable number.

8538470077777 is a deficient number, since it is larger than the sum of its proper divisors (66022499).

8538470077777 is a wasteful number, since it uses less digits than its factorization.

8538470077777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66022498.

The product of its (nonzero) digits is 451772160, while the sum is 70.

The spelling of 8538470077777 in words is "eight trillion, five hundred thirty-eight billion, four hundred seventy million, seventy-seven thousand, seven hundred seventy-seven".