3665671804782 has 24 divisors (see below), whose sum is σ = 8553234211704. Its totient is φ = 1127899016784.

The previous prime is 3665671804741. The next prime is 3665671804787. The reversal of 3665671804782 is 2874081765663.

3665671804782 is a `hidden beast` number, since 3 + 66 + 567 + 1 + 8 + 0 + 4 + 7 + 8 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665671804787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7832631828 + ... + 7832632295.

It is an arithmetic number, because the mean of its divisors is an integer number (356384758821).

Almost surely, 2^{3665671804782} is an apocalyptic number.

3665671804782 is an abundant number, since it is smaller than the sum of its proper divisors (4887562406922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3665671804782 is a wasteful number, since it uses less digits than its factorization.

3665671804782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15665264144 (or 15665264141 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 63.

The spelling of 3665671804782 in words is "three trillion, six hundred sixty-five billion, six hundred seventy-one million, eight hundred four thousand, seven hundred eighty-two".