867823949511 has 6 divisors (see below), whose sum is σ = 1253523482640. Its totient is φ = 578549299668.

The previous prime is 867823949413. The next prime is 867823949527. The reversal of 867823949511 is 115949328768.

867823949511 is a `hidden beast` number, since 8 + 6 + 7 + 8 + 23 + 94 + 9 + 511 = 666.

867823949511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 867823949511 - 2⁷ = 867823949383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867823949581) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48212441631 + ... + 48212441648.

It is an arithmetic number, because the mean of its divisors is an integer number (208920580440).

Almost surely, 2^867823949511 is an apocalyptic number.

867823949511 is a deficient number, since it is larger than the sum of its proper divisors (385699533129).

867823949511 is a wasteful number, since it uses less digits than its factorization.

867823949511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96424883285 (or 96424883282 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 63.

The spelling of 867823949511 in words is "eight hundred sixty-seven billion, eight hundred twenty-three million, nine hundred forty-nine thousand, five hundred eleven".