84427329861 has 32 divisors (see below), whose sum is σ = 143664128000. Its totient is φ = 48001734000.

The previous prime is 84427329817. The next prime is 84427329869. The reversal of 84427329861 is 16892372448.

84427329861 is a `hidden beast` number, since 84 + 4 + 273 + 298 + 6 + 1 = 666.

It is not a de Polignac number, because 84427329861 - 2⁶ = 84427329797 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84427329798 and 84427329807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84427329869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1084765 + ... + 1159986.

It is an arithmetic number, because the mean of its divisors is an integer number (4489504000).

Almost surely, 2^84427329861 is an apocalyptic number.

It is an amenable number.

84427329861 is a deficient number, since it is larger than the sum of its proper divisors (59236798139).

84427329861 is a wasteful number, since it uses less digits than its factorization.

84427329861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244966 (or 2244960 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 84427329861 in words is "eighty-four billion, four hundred twenty-seven million, three hundred twenty-nine thousand, eight hundred sixty-one".