35221857389 has 4 divisors (see below), whose sum is σ = 35533555356. Its totient is φ = 34910159424.

The previous prime is 35221857329. The next prime is 35221857401. The reversal of 35221857389 is 98375812253.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98375812253 = 53 ⋅1856147401.

It can be written as a sum of positive squares in 2 ways, for example, as 4822191364 + 30399666025 = 69442^2 + 174355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-35221857389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 35221857389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35221857329) 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, 155848814 + ... + 155849039.

It is an arithmetic number, because the mean of its divisors is an integer number (8883388839).

Almost surely, 2^35221857389 is an apocalyptic number.

It is an amenable number.

35221857389 is a deficient number, since it is larger than the sum of its proper divisors (311697967).

35221857389 is a wasteful number, since it uses less digits than its factorization.

35221857389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311697966.

The product of its digits is 3628800, while the sum is 53.

The spelling of 35221857389 in words is "thirty-five billion, two hundred twenty-one million, eight hundred fifty-seven thousand, three hundred eighty-nine".