867807808129551 has 8 divisors (see below), whose sum is σ = 1171017765187200. Its totient is φ = 571568194912472.

The previous prime is 867807808129529. The next prime is 867807808129553. The reversal of 867807808129551 is 155921808708768.

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 867807808129551 - 2⁵ = 867807808129519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867807808129553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1742585959851 + ... + 1742585960348.

It is an arithmetic number, because the mean of its divisors is an integer number (146377220648400).

Almost surely, 2^{867807808129551} is an apocalyptic number.

867807808129551 is a deficient number, since it is larger than the sum of its proper divisors (303209957057649).

867807808129551 is a wasteful number, since it uses less digits than its factorization.

867807808129551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3485171920285.

The product of its (nonzero) digits is 541900800, while the sum is 75.

The spelling of 867807808129551 in words is "eight hundred sixty-seven trillion, eight hundred seven billion, eight hundred eight million, one hundred twenty-nine thousand, five hundred fifty-one".