8361693565945 has 4 divisors (see below), whose sum is σ = 10034032279140. Its totient is φ = 6689354852752.

The previous prime is 8361693565913. The next prime is 8361693565949. The reversal of 8361693565945 is 5495653961638.

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 2610383086224 + 5751310479721 = 1615668^2 + 2398189^2 .

It is a cyclic number.

It is not a de Polignac number, because 8361693565945 - 2⁵ = 8361693565913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8361693565949) 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, 836169356590 + ... + 836169356599.

It is an arithmetic number, because the mean of its divisors is an integer number (2508508069785).

Almost surely, 2^{8361693565945} is an apocalyptic number.

It is an amenable number.

8361693565945 is a deficient number, since it is larger than the sum of its proper divisors (1672338713195).

8361693565945 is a wasteful number, since it uses less digits than its factorization.

8361693565945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672338713194.

The product of its digits is 629856000, while the sum is 70.

The spelling of 8361693565945 in words is "eight trillion, three hundred sixty-one billion, six hundred ninety-three million, five hundred sixty-five thousand, nine hundred forty-five".