35640899689 has 4 divisors (see below), whose sum is σ = 36869896260. Its totient is φ = 34411903120.

The previous prime is 35640899677. The next prime is 35640899711. The reversal of 35640899689 is 98699804653.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98699804653 = 149627 ⋅659639.

It can be written as a sum of positive squares in 2 ways, for example, as 11211209689 + 24429690000 = 105883^2 + 156300^2 .

It is a cyclic number.

It is not a de Polignac number, because 35640899689 - 2¹³ = 35640891497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35640899629) 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, 614498242 + ... + 614498299.

It is an arithmetic number, because the mean of its divisors is an integer number (9217474065).

Almost surely, 2^35640899689 is an apocalyptic number.

It is an amenable number.

35640899689 is a deficient number, since it is larger than the sum of its proper divisors (1228996571).

35640899689 is a wasteful number, since it uses less digits than its factorization.

35640899689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228996570.

The product of its (nonzero) digits is 100776960, while the sum is 67.

The spelling of 35640899689 in words is "thirty-five billion, six hundred forty million, eight hundred ninety-nine thousand, six hundred eighty-nine".