13256203621364 has 24 divisors (see below), whose sum is σ = 25895839636128. Its totient is φ = 5885418097440.

The previous prime is 13256203621361. The next prime is 13256203621457. The reversal of 13256203621364 is 46312630265231.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13256203621361) 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, 3503223167 + ... + 3503226950.

It is an arithmetic number, because the mean of its divisors is an integer number (1078993318172).

Almost surely, 2^{13256203621364} is an apocalyptic number.

It is an amenable number.

13256203621364 is a deficient number, since it is larger than the sum of its proper divisors (12639636014764).

13256203621364 is a wasteful number, since it uses less digits than its factorization.

13256203621364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7006450175 (or 7006450173 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 44.

Adding to 13256203621364 its reverse (46312630265231), we get a palindrome (59568833886595).

The spelling of 13256203621364 in words is "thirteen trillion, two hundred fifty-six billion, two hundred three million, six hundred twenty-one thousand, three hundred sixty-four".