84186785945 has 8 divisors (see below), whose sum is σ = 102680277000. Its totient is φ = 66245339520.

The previous prime is 84186785941. The next prime is 84186785953. The reversal of 84186785945 is 54958768148.

It can be written as a sum of positive squares in 4 ways, for example, as 3074037136 + 81112748809 = 55444^2 + 284803^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84186785945 - 2² = 84186785941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84186785941) 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 7 ways as a sum of consecutive naturals, for example, 138010820 + ... + 138011429.

It is an arithmetic number, because the mean of its divisors is an integer number (12835034625).

Almost surely, 2^84186785945 is an apocalyptic number.

It is an amenable number.

84186785945 is a deficient number, since it is larger than the sum of its proper divisors (18493491055).

84186785945 is a wasteful number, since it uses less digits than its factorization.

84186785945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276022315.

The product of its digits is 77414400, while the sum is 65.

The spelling of 84186785945 in words is "eighty-four billion, one hundred eighty-six million, seven hundred eighty-five thousand, nine hundred forty-five".