8712957939985 has 16 divisors (see below), whose sum is σ = 11300471770896. Its totient is φ = 6410956209408.

The previous prime is 8712957939967. The next prime is 8712957940189. The reversal of 8712957939985 is 5899397592178.

It is a Cunningham number, because it is equal to 2951772²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 4029927771024 + 4683030168961 = 2007468^2 + 2164031^2 .

It is a cyclic number.

It is not a de Polignac number, because 8712957939985 - 2¹³ = 8712957931793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8712957939899 and 8712957939908.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241941394 + ... + 241977403.

It is an arithmetic number, because the mean of its divisors is an integer number (706279485681).

Almost surely, 2^{8712957939985} is an apocalyptic number.

It is an amenable number.

8712957939985 is a deficient number, since it is larger than the sum of its proper divisors (2587513830911).

8712957939985 is a wasteful number, since it uses less digits than its factorization.

8712957939985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483919092.

The product of its digits is 3086294400, while the sum is 82.

The spelling of 8712957939985 in words is "eight trillion, seven hundred twelve billion, nine hundred fifty-seven million, nine hundred thirty-nine thousand, nine hundred eighty-five".