35665770121 has 4 divisors (see below), whose sum is σ = 36629709892. Its totient is φ = 34701830352.

The previous prime is 35665769999. The next prime is 35665770223. The reversal of 35665770121 is 12107756653.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12107756653 = 409 ⋅29603317.

It can be written as a sum of positive squares in 2 ways, for example, as 23286760000 + 12379010121 = 152600^2 + 111261^2 .

It is a cyclic number.

It is not a de Polignac number, because 35665770121 - 2⁹ = 35665769609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35665771121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481969830 + ... + 481969903.

It is an arithmetic number, because the mean of its divisors is an integer number (9157427473).

Almost surely, 2^35665770121 is an apocalyptic number.

It is an amenable number.

35665770121 is a deficient number, since it is larger than the sum of its proper divisors (963939771).

35665770121 is an equidigital number, since it uses as much as digits as its factorization.

35665770121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963939770.

The product of its (nonzero) digits is 264600, while the sum is 43.

The spelling of 35665770121 in words is "thirty-five billion, six hundred sixty-five million, seven hundred seventy thousand, one hundred twenty-one".