867682617049 has 4 divisors (see below), whose sum is σ = 884053987236. Its totient is φ = 851311246864.

The previous prime is 867682617029. The next prime is 867682617077. The reversal of 867682617049 is 940716286768.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 690614185024 + 177068432025 = 831032^2 + 420795^2 .

It is a cyclic number.

It is not a de Polignac number, because 867682617049 - 2²⁵ = 867649062617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (867682617029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8185685014 + ... + 8185685119.

It is an arithmetic number, because the mean of its divisors is an integer number (221013496809).

Almost surely, 2^867682617049 is an apocalyptic number.

It is an amenable number.

867682617049 is a deficient number, since it is larger than the sum of its proper divisors (16371370187).

867682617049 is a wasteful number, since it uses less digits than its factorization.

867682617049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16371370186.

The product of its (nonzero) digits is 48771072, while the sum is 64.

The spelling of 867682617049 in words is "eight hundred sixty-seven billion, six hundred eighty-two million, six hundred seventeen thousand, forty-nine".