214171256405 has 8 divisors (see below), whose sum is σ = 261361533600. Its totient is φ = 168432987856.

The previous prime is 214171256401. The next prime is 214171256407. The reversal of 214171256405 is 504652171412.

214171256405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 214171256405 - 2² = 214171256401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214171256401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363001835 + ... + 363002424.

It is an arithmetic number, because the mean of its divisors is an integer number (32670191700).

Almost surely, 2^214171256405 is an apocalyptic number.

It is an amenable number.

214171256405 is a deficient number, since it is larger than the sum of its proper divisors (47190277195).

214171256405 is an equidigital number, since it uses as much as digits as its factorization.

214171256405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726004323.

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 214171256405 in words is "two hundred fourteen billion, one hundred seventy-one million, two hundred fifty-six thousand, four hundred five".