3685780166877 has 8 divisors (see below), whose sum is σ = 5460415062080. Its totient is φ = 2457186777900.

The previous prime is 3685780166851. The next prime is 3685780166891. The reversal of 3685780166877 is 7786610875863.

3685780166877 is a `hidden beast` number, since 36 + 8 + 578 + 0 + 16 + 6 + 8 + 7 + 7 = 666.

It is not a de Polignac number, because 3685780166877 - 2⁶ = 3685780166813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3685780166897) 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, 68255188249 + ... + 68255188302.

It is an arithmetic number, because the mean of its divisors is an integer number (682551882760).

Almost surely, 2^{3685780166877} is an apocalyptic number.

It is an amenable number.

3685780166877 is a deficient number, since it is larger than the sum of its proper divisors (1774634895203).

3685780166877 is a wasteful number, since it uses less digits than its factorization.

3685780166877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136510376560 (or 136510376554 counting only the distinct ones).

The product of its (nonzero) digits is 568995840, while the sum is 72.

The spelling of 3685780166877 in words is "three trillion, six hundred eighty-five billion, seven hundred eighty million, one hundred sixty-six thousand, eight hundred seventy-seven".