8646437492782 has 16 divisors (see below), whose sum is σ = 13135414818240. Its totient is φ = 4267979101152.

The previous prime is 8646437492743. The next prime is 8646437492783. The reversal of 8646437492782 is 2872947346468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8646437492783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1989133 + ... + 4609720.

It is an arithmetic number, because the mean of its divisors is an integer number (820963426140).

Almost surely, 2^{8646437492782} is an apocalyptic number.

8646437492782 is a deficient number, since it is larger than the sum of its proper divisors (4488977325458).

8646437492782 is a wasteful number, since it uses less digits than its factorization.

8646437492782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6607227.

The product of its digits is 780337152, while the sum is 70.

The spelling of 8646437492782 in words is "eight trillion, six hundred forty-six billion, four hundred thirty-seven million, four hundred ninety-two thousand, seven hundred eighty-two".