35255778121 has 2 divisors, whose sum is σ = 35255778122. Its totient is φ = 35255778120.

The previous prime is 35255778109. The next prime is 35255778139. The reversal of 35255778121 is 12187755253.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34806126096 + 449652025 = 186564^2 + 21205^2 .

It is a cyclic number.

It is not a de Polignac number, because 35255778121 - 2²⁵ = 35222223689 is a prime.

It is not a weakly prime, because it can be changed into another prime (35255778101) 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 as a sum of consecutive naturals, namely, 17627889060 + 17627889061.

It is an arithmetic number, because the mean of its divisors is an integer number (17627889061).

Almost surely, 2^35255778121 is an apocalyptic number.

It is an amenable number.

35255778121 is a deficient number, since it is larger than the sum of its proper divisors (1).

35255778121 is an equidigital number, since it uses as much as digits as its factorization.

35255778121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 588000, while the sum is 46.

The spelling of 35255778121 in words is "thirty-five billion, two hundred fifty-five million, seven hundred seventy-eight thousand, one hundred twenty-one".