1688106862037 has 2 divisors, whose sum is σ = 1688106862038. Its totient is φ = 1688106862036.

The previous prime is 1688106862003. The next prime is 1688106862063. The reversal of 1688106862037 is 7302686018861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1055487062161 + 632619799876 = 1027369^2 + 795374^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1688106862037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1688106462037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 844053431018 + 844053431019.

It is an arithmetic number, because the mean of its divisors is an integer number (844053431019).

Almost surely, 2^{1688106862037} is an apocalyptic number.

It is an amenable number.

1688106862037 is a deficient number, since it is larger than the sum of its proper divisors (1).

1688106862037 is an equidigital number, since it uses as much as digits as its factorization.

1688106862037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4644864, while the sum is 56.

The spelling of 1688106862037 in words is "one trillion, six hundred eighty-eight billion, one hundred six million, eight hundred sixty-two thousand, thirty-seven".