214238891571 has 4 divisors (see below), whose sum is σ = 285651855432. Its totient is φ = 142825927712.

The previous prime is 214238891557. The next prime is 214238891593. The reversal of 214238891571 is 175198832412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 214238891571 - 2¹⁵ = 214238858803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (214238891551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35706481926 + ... + 35706481931.

It is an arithmetic number, because the mean of its divisors is an integer number (71412963858).

Almost surely, 2^214238891571 is an apocalyptic number.

214238891571 is a deficient number, since it is larger than the sum of its proper divisors (71412963861).

214238891571 is an equidigital number, since it uses as much as digits as its factorization.

214238891571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71412963860.

The product of its digits is 967680, while the sum is 51.

The spelling of 214238891571 in words is "two hundred fourteen billion, two hundred thirty-eight million, eight hundred ninety-one thousand, five hundred seventy-one".