35696839921 has 8 divisors (see below), whose sum is σ = 38221337160. Its totient is φ = 33219529728.

The previous prime is 35696839897. The next prime is 35696839939. The reversal of 35696839921 is 12993869653.

35696839921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6074643600 + 29622196321 = 77940^2 + 172111^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 35696839921 - 2⁵ = 35696839889 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 35696839921.

It is not an unprimeable number, because it can be changed into a prime (35696839621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11795196 + ... + 11798221.

It is an arithmetic number, because the mean of its divisors is an integer number (4777667145).

Almost surely, 2^35696839921 is an apocalyptic number.

It is an amenable number.

35696839921 is a deficient number, since it is larger than the sum of its proper divisors (2524497239).

35696839921 is a wasteful number, since it uses less digits than its factorization.

35696839921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23593523.

The product of its digits is 18895680, while the sum is 61.

The spelling of 35696839921 in words is "thirty-five billion, six hundred ninety-six million, eight hundred thirty-nine thousand, nine hundred twenty-one".