86647138785245 has 8 divisors (see below), whose sum is σ = 107561965388760. Its totient is φ = 66927445130560.

The previous prime is 86647138785217. The next prime is 86647138785253. The reversal of 86647138785245 is 54258783174668.

It can be written as a sum of positive squares in 4 ways, for example, as 35668295622436 + 50978843162809 = 5972294^2 + 7139947^2 .

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

It is not a de Polignac number, because 86647138785245 - 2²² = 86647134590941 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298783237046 + ... + 298783237335.

It is an arithmetic number, because the mean of its divisors is an integer number (13445245673595).

Almost surely, 2^{86647138785245} is an apocalyptic number.

It is an amenable number.

86647138785245 is a deficient number, since it is larger than the sum of its proper divisors (20914826603515).

86647138785245 is a wasteful number, since it uses less digits than its factorization.

86647138785245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597566474415.

The product of its digits is 2167603200, while the sum is 74.

The spelling of 86647138785245 in words is "eighty-six trillion, six hundred forty-seven billion, one hundred thirty-eight million, seven hundred eighty-five thousand, two hundred forty-five".