13561828073231 has 8 divisors (see below), whose sum is σ = 14665105702080. Its totient is φ = 12492497448448.

The previous prime is 13561828073221. The next prime is 13561828073237. The reversal of 13561828073231 is 13237082816531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13561828073231 is a prime.

It is a super-2 number, since 2×13561828073231² (a number of 27 digits) contains 22 as substring.

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 13561828073231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13561828073237) 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, 8486750186 + ... + 8486751783.

It is an arithmetic number, because the mean of its divisors is an integer number (1833138212760).

Almost surely, 2^{13561828073231} is an apocalyptic number.

13561828073231 is a deficient number, since it is larger than the sum of its proper divisors (1103277628849).

13561828073231 is a wasteful number, since it uses less digits than its factorization.

13561828073231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16973502033.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 13561828073231 in words is "thirteen trillion, five hundred sixty-one billion, eight hundred twenty-eight million, seventy-three thousand, two hundred thirty-one".