3675378989691 has 24 divisors (see below), whose sum is σ = 5341904852544. Its totient is φ = 2435055022080.

The previous prime is 3675378989651. The next prime is 3675378989719. The reversal of 3675378989691 is 1969898735763.

3675378989691 is a `hidden beast` number, since 3 + 6 + 75 + 378 + 9 + 8 + 96 + 91 = 666.

It is not a de Polignac number, because 3675378989691 - 2⁹ = 3675378989179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3675378989691.

It is not an unprimeable number, because it can be changed into a prime (3675378989651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 846496 + ... + 2840301.

It is an arithmetic number, because the mean of its divisors is an integer number (222579368856).

Almost surely, 2^{3675378989691} is an apocalyptic number.

3675378989691 is a deficient number, since it is larger than the sum of its proper divisors (1666525862853).

3675378989691 is a wasteful number, since it uses less digits than its factorization.

3675378989691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3687491 (or 3687488 counting only the distinct ones).

The product of its digits is 3703553280, while the sum is 81.

The spelling of 3675378989691 in words is "three trillion, six hundred seventy-five billion, three hundred seventy-eight million, nine hundred eighty-nine thousand, six hundred ninety-one".