8157811362205 has 16 divisors (see below), whose sum is σ = 9997972694784. Its totient is φ = 6387191786560.

The previous prime is 8157811362133. The next prime is 8157811362209. The reversal of 8157811362205 is 5022631187518.

It is not a de Polignac number, because 8157811362205 - 2¹¹ = 8157811360157 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 (8157811362209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7171539 + ... + 8230831.

It is an arithmetic number, because the mean of its divisors is an integer number (624873293424).

Almost surely, 2^{8157811362205} is an apocalyptic number.

It is an amenable number.

8157811362205 is a deficient number, since it is larger than the sum of its proper divisors (1840161332579).

8157811362205 is a wasteful number, since it uses less digits than its factorization.

8157811362205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092116.

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 8157811362205 in words is "eight trillion, one hundred fifty-seven billion, eight hundred eleven million, three hundred sixty-two thousand, two hundred five".