1287686608167 has 8 divisors (see below), whose sum is σ = 1749310109424. Its totient is φ = 842260422848.

The previous prime is 1287686608099. The next prime is 1287686608237. The reversal of 1287686608167 is 7618066867821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1287686608167 - 2²³ = 1287678219559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1287686608098 and 1287686608107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287686608667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4049328798 + ... + 4049329115.

It is an arithmetic number, because the mean of its divisors is an integer number (218663763678).

Almost surely, 2^{1287686608167} is an apocalyptic number.

1287686608167 is a deficient number, since it is larger than the sum of its proper divisors (461623501257).

1287686608167 is an equidigital number, since it uses as much as digits as its factorization.

1287686608167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8098657969.

The product of its (nonzero) digits is 65028096, while the sum is 66.

The spelling of 1287686608167 in words is "one trillion, two hundred eighty-seven billion, six hundred eighty-six million, six hundred eight thousand, one hundred sixty-seven".