872727771613 has 2 divisors, whose sum is σ = 872727771614. Its totient is φ = 872727771612.

The previous prime is 872727771599. The next prime is 872727771673. The reversal of 872727771613 is 316177727278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 692453651044 + 180274120569 = 832138^2 + 424587^2 .

It is a cyclic number.

It is not a de Polignac number, because 872727771613 - 2²¹ = 872725674461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872727771673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436363885806 + 436363885807.

It is an arithmetic number, because the mean of its divisors is an integer number (436363885807).

Almost surely, 2^872727771613 is an apocalyptic number.

It is an amenable number.

872727771613 is a deficient number, since it is larger than the sum of its proper divisors (1).

872727771613 is an equidigital number, since it uses as much as digits as its factorization.

872727771613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9680832, while the sum is 58.

The spelling of 872727771613 in words is "eight hundred seventy-two billion, seven hundred twenty-seven million, seven hundred seventy-one thousand, six hundred thirteen".