214255971861 has 4 divisors (see below), whose sum is σ = 285674629152. Its totient is φ = 142837314572.

The previous prime is 214255971847. The next prime is 214255971893. The reversal of 214255971861 is 168179552412.

214255971861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 214255971861 - 2⁵ = 214255971829 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214255971821) 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 3 ways as a sum of consecutive naturals, for example, 35709328641 + ... + 35709328646.

It is an arithmetic number, because the mean of its divisors is an integer number (71418657288).

Almost surely, 2^214255971861 is an apocalyptic number.

It is an amenable number.

214255971861 is a deficient number, since it is larger than the sum of its proper divisors (71418657291).

214255971861 is an equidigital number, since it uses as much as digits as its factorization.

214255971861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71418657290.

The product of its digits is 1209600, while the sum is 51.

The spelling of 214255971861 in words is "two hundred fourteen billion, two hundred fifty-five million, nine hundred seventy-one thousand, eight hundred sixty-one".