13635205982 has 4 divisors (see below), whose sum is σ = 20452808976. Its totient is φ = 6817602990.

The previous prime is 13635205981. The next prime is 13635206003. The reversal of 13635205982 is 28950253631.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13635205981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3408801494 + ... + 3408801497.

It is an arithmetic number, because the mean of its divisors is an integer number (5113202244).

Almost surely, 2^13635205982 is an apocalyptic number.

13635205982 is a deficient number, since it is larger than the sum of its proper divisors (6817602994).

13635205982 is an equidigital number, since it uses as much as digits as its factorization.

13635205982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6817602993.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 13635205982 in words is "thirteen billion, six hundred thirty-five million, two hundred five thousand, nine hundred eighty-two".