86911664823 has 32 divisors (see below), whose sum is σ = 133705414080. Its totient is φ = 55753505280.

The previous prime is 86911664783. The next prime is 86911664837. The reversal of 86911664823 is 32846611968.

It is not a de Polignac number, because 86911664823 - 2¹⁸ = 86911402679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86911664823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86911664843) 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 31 ways as a sum of consecutive naturals, for example, 456936 + ... + 618557.

It is an arithmetic number, because the mean of its divisors is an integer number (4178294190).

Almost surely, 2^86911664823 is an apocalyptic number.

86911664823 is a deficient number, since it is larger than the sum of its proper divisors (46793749257).

86911664823 is a wasteful number, since it uses less digits than its factorization.

86911664823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075616 (or 1075610 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The spelling of 86911664823 in words is "eighty-six billion, nine hundred eleven million, six hundred sixty-four thousand, eight hundred twenty-three".