3665926547766 has 192 divisors, whose sum is σ = 9781095667200. Its totient is φ = 968849538048.

The previous prime is 3665926547729. The next prime is 3665926547783. The reversal of 3665926547766 is 6677456295663.

3665926547766 is a `hidden beast` number, since 3 + 6 + 6 + 5 + 9 + 2 + 6 + 547 + 76 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 3665926547694 and 3665926547703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 400336860 + ... + 400346016.

It is an arithmetic number, because the mean of its divisors is an integer number (50943206600).

Almost surely, 2^{3665926547766} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3665926547766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4890547833600).

3665926547766 is an abundant number, since it is smaller than the sum of its proper divisors (6115169119434).

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

3665926547766 is a wasteful number, since it uses less digits than its factorization.

3665926547766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13123 (or 13120 counting only the distinct ones).

The product of its digits is 2057529600, while the sum is 72.

The spelling of 3665926547766 in words is "three trillion, six hundred sixty-five billion, nine hundred twenty-six million, five hundred forty-seven thousand, seven hundred sixty-six".