2687642533189 has 2 divisors, whose sum is σ = 2687642533190. Its totient is φ = 2687642533188.

The previous prime is 2687642533159. The next prime is 2687642533201. The reversal of 2687642533189 is 9813352467862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2196042429025 + 491600104164 = 1481905^2 + 701142^2 .

It is a cyclic number.

It is not a de Polignac number, because 2687642533189 - 2¹³ = 2687642524997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2687642533189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2687642533159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1343821266594 + 1343821266595.

It is an arithmetic number, because the mean of its divisors is an integer number (1343821266595).

Almost surely, 2^{2687642533189} is an apocalyptic number.

It is an amenable number.

2687642533189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2687642533189 is an equidigital number, since it uses as much as digits as its factorization.

2687642533189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104509440, while the sum is 64.

The spelling of 2687642533189 in words is "two trillion, six hundred eighty-seven billion, six hundred forty-two million, five hundred thirty-three thousand, one hundred eighty-nine".