85811707484856 has 128 divisors (see below), whose sum is σ = 238643907840000. Its totient is φ = 28570547422080.

The previous prime is 85811707484851. The next prime is 85811707484869. The reversal of 85811707484856 is 65848470711858.

85811707484856 is a `hidden beast` number, since 8 + 5 + 8 + 1 + 1 + 70 + 74 + 8 + 485 + 6 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85811707484851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1180658325 + ... + 1180731003.

It is an arithmetic number, because the mean of its divisors is an integer number (1864405530000).

Almost surely, 2^{85811707484856} is an apocalyptic number.

It is an amenable number.

85811707484856 is an abundant number, since it is smaller than the sum of its proper divisors (152832200355144).

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

85811707484856 is a wasteful number, since it uses less digits than its factorization.

85811707484856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78994 (or 78984 counting only the distinct ones).

The product of its (nonzero) digits is 481689600, while the sum is 72.

The spelling of 85811707484856 in words is "eighty-five trillion, eight hundred eleven billion, seven hundred seven million, four hundred eighty-four thousand, eight hundred fifty-six".