86411781992808 has 160 divisors (see below), whose sum is σ = 244424043452160. Its totient is φ = 28519467811200.

The previous prime is 86411781992771. The next prime is 86411781992827. The reversal of 86411781992808 is 80829918711468.

86411781992808 is a `hidden beast` number, since 86 + 4 + 11 + 78 + 199 + 280 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 407099041 + ... + 407311247.

It is an arithmetic number, because the mean of its divisors is an integer number (1527650271576).

Almost surely, 2^{86411781992808} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86411781992808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122212021726080).

86411781992808 is an abundant number, since it is smaller than the sum of its proper divisors (158012261459352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86411781992808 is a wasteful number, since it uses less digits than its factorization.

86411781992808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218429 (or 218416 counting only the distinct ones).

The product of its (nonzero) digits is 111476736, while the sum is 72.

The spelling of 86411781992808 in words is "eighty-six trillion, four hundred eleven billion, seven hundred eighty-one million, nine hundred ninety-two thousand, eight hundred eight".