13727304376821 has 80 divisors (see below), whose sum is σ = 23675502597120. Its totient is φ = 7763953939200.

The previous prime is 13727304376811. The next prime is 13727304376829. The reversal of 13727304376821 is 12867340372731.

13727304376821 is a `hidden beast` number, since 13 + 72 + 73 + 0 + 437 + 68 + 2 + 1 = 666.

It is not a de Polignac number, because 13727304376821 - 2⁷ = 13727304376693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13727304376829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 181326745 + ... + 181402433.

It is an arithmetic number, because the mean of its divisors is an integer number (295943782464).

Almost surely, 2^{13727304376821} is an apocalyptic number.

It is an amenable number.

13727304376821 is a deficient number, since it is larger than the sum of its proper divisors (9948198220299).

13727304376821 is a wasteful number, since it uses less digits than its factorization.

13727304376821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78976 (or 78967 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 54.

The spelling of 13727304376821 in words is "thirteen trillion, seven hundred twenty-seven billion, three hundred four million, three hundred seventy-six thousand, eight hundred twenty-one".