966617239877 has 2 divisors, whose sum is σ = 966617239878. Its totient is φ = 966617239876.

The previous prime is 966617239873. The next prime is 966617239901. The reversal of 966617239877 is 778932716669.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 794782948036 + 171834291841 = 891506^2 + 414529^2 .

It is a cyclic number.

It is not a de Polignac number, because 966617239877 - 2² = 966617239873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 966617239877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (966617239873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483308619938 + 483308619939.

It is an arithmetic number, because the mean of its divisors is an integer number (483308619939).

Almost surely, 2^966617239877 is an apocalyptic number.

It is an amenable number.

966617239877 is a deficient number, since it is larger than the sum of its proper divisors (1).

966617239877 is an equidigital number, since it uses as much as digits as its factorization.

966617239877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288054144, while the sum is 71.

The spelling of 966617239877 in words is "nine hundred sixty-six billion, six hundred seventeen million, two hundred thirty-nine thousand, eight hundred seventy-seven".