1686701870201 has 2 divisors, whose sum is σ = 1686701870202. Its totient is φ = 1686701870200.

The previous prime is 1686701870177. The next prime is 1686701870209. The reversal of 1686701870201 is 1020781076861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 962015718976 + 724686151225 = 980824^2 + 851285^2 .

It is a cyclic number.

It is not a de Polignac number, because 1686701870201 - 2¹⁴ = 1686701853817 is a prime.

It is a super-4 number, since 4×1686701870201⁴ (a number of 50 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (1686701870209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 843350935100 + 843350935101.

It is an arithmetic number, because the mean of its divisors is an integer number (843350935101).

Almost surely, 2^{1686701870201} is an apocalyptic number.

It is an amenable number.

1686701870201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1686701870201 is an equidigital number, since it uses as much as digits as its factorization.

1686701870201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 47.

The spelling of 1686701870201 in words is "one trillion, six hundred eighty-six billion, seven hundred one million, eight hundred seventy thousand, two hundred one".