2186453661001 has 2 divisors, whose sum is σ = 2186453661002. Its totient is φ = 2186453661000.

The previous prime is 2186453660981. The next prime is 2186453661043. The reversal of 2186453661001 is 1001663546812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1675085651001 + 511368010000 = 1294251^2 + 715100^2 .

It is a cyclic number.

It is not a de Polignac number, because 2186453661001 - 2⁵ = 2186453660969 is a prime.

It is a super-2 number, since 2×2186453661001² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2186453661901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093226830500 + 1093226830501.

It is an arithmetic number, because the mean of its divisors is an integer number (1093226830501).

Almost surely, 2^{2186453661001} is an apocalyptic number.

It is an amenable number.

2186453661001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2186453661001 is an equidigital number, since it uses as much as digits as its factorization.

2186453661001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 2186453661001 in words is "two trillion, one hundred eighty-six billion, four hundred fifty-three million, six hundred sixty-one thousand, one".