12161003635 has 16 divisors (see below), whose sum is σ = 16856322912. Its totient is φ = 8324108800.

The previous prime is 12161003597. The next prime is 12161003641. The reversal of 12161003635 is 53630016121.

12161003635 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12161003635 - 2⁷ = 12161003507 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6502276 + ... + 6504145.

It is an arithmetic number, because the mean of its divisors is an integer number (1053520182).

Almost surely, 2^12161003635 is an apocalyptic number.

12161003635 is a deficient number, since it is larger than the sum of its proper divisors (4695319277).

12161003635 is a wasteful number, since it uses less digits than its factorization.

12161003635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13006454.

The product of its (nonzero) digits is 3240, while the sum is 28.

Adding to 12161003635 its reverse (53630016121), we get a palindrome (65791019756).

The spelling of 12161003635 in words is "twelve billion, one hundred sixty-one million, three thousand, six hundred thirty-five".