13131841367821 has 32 divisors (see below), whose sum is σ = 14579688960000. Its totient is φ = 11727915600960.

The previous prime is 13131841367791. The next prime is 13131841367867. The reversal of 13131841367821 is 12876314813131.

It is a cyclic number.

It is not a de Polignac number, because 13131841367821 - 2⁴¹ = 10932818112269 is a prime.

It is a super-2 number, since 2×13131841367821² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131841362821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 322162240 + ... + 322202998.

It is an arithmetic number, because the mean of its divisors is an integer number (455615280000).

Almost surely, 2^{13131841367821} is an apocalyptic number.

13131841367821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13131841367821 is a deficient number, since it is larger than the sum of its proper divisors (1447847592179).

13131841367821 is a wasteful number, since it uses less digits than its factorization.

13131841367821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42697.

The product of its digits is 580608, while the sum is 49.

The spelling of 13131841367821 in words is "thirteen trillion, one hundred thirty-one billion, eight hundred forty-one million, three hundred sixty-seven thousand, eight hundred twenty-one".