84867750006561 has 12 divisors (see below), whose sum is σ = 127127000010192. Its totient is φ = 56578500004212.

The previous prime is 84867750006547. The next prime is 84867750006569. The reversal of 84867750006561 is 16560005776848.

84867750006561 is a `hidden beast` number, since 8 + 4 + 8 + 6 + 7 + 7 + 500 + 0 + 65 + 61 = 666.

It is not a de Polignac number, because 84867750006561 - 2⁴⁶ = 14499005828897 is a prime.

It is a super-2 number, since 2×84867750006561² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84867750006569) 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 11 ways as a sum of consecutive naturals, for example, 174624999771 + ... + 174625000256.

It is an arithmetic number, because the mean of its divisors is an integer number (10593916667516).

Almost surely, 2^{84867750006561} is an apocalyptic number.

84867750006561 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

84867750006561 is a deficient number, since it is larger than the sum of its proper divisors (42259250003631).

84867750006561 is an equidigital number, since it uses as much as digits as its factorization.

84867750006561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349250000042 (or 349250000030 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 63.

The spelling of 84867750006561 in words is "eighty-four trillion, eight hundred sixty-seven billion, seven hundred fifty million, six thousand, five hundred sixty-one".