13205604634 has 16 divisors (see below), whose sum is σ = 19928143872. Its totient is φ = 6562982448.

The previous prime is 13205604619. The next prime is 13205604649. The reversal of 13205604634 is 43640650231.

It is an interprime number because it is at equal distance from previous prime (13205604619) and next prime (13205604649).

It is a super-3 number, since 3×13205604634³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13205604634.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268567 + ... + 313909.

It is an arithmetic number, because the mean of its divisors is an integer number (1245508992).

Almost surely, 2^13205604634 is an apocalyptic number.

13205604634 is a deficient number, since it is larger than the sum of its proper divisors (6722539238).

13205604634 is a wasteful number, since it uses less digits than its factorization.

13205604634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46221.

The product of its (nonzero) digits is 51840, while the sum is 34.

The spelling of 13205604634 in words is "thirteen billion, two hundred five million, six hundred four thousand, six hundred thirty-four".