3765969981166 has 32 divisors (see below), whose sum is σ = 5750044428960. Its totient is φ = 1849381632000.

The previous prime is 3765969981161. The next prime is 3765969981173. The reversal of 3765969981166 is 6611899695673.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3765969981092 and 3765969981101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3765969981161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303676566 + ... + 303688966.

It is an arithmetic number, because the mean of its divisors is an integer number (179688888405).

Almost surely, 2^{3765969981166} is an apocalyptic number.

3765969981166 is a deficient number, since it is larger than the sum of its proper divisors (1984074447794).

3765969981166 is a wasteful number, since it uses less digits than its factorization.

3765969981166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15940.

The product of its digits is 793618560, while the sum is 76.

The spelling of 3765969981166 in words is "three trillion, seven hundred sixty-five billion, nine hundred sixty-nine million, nine hundred eighty-one thousand, one hundred sixty-six".