214667875865557 has 4 divisors (see below), whose sum is σ = 214718255563756. Its totient is φ = 214617496167360.

The previous prime is 214667875865543. The next prime is 214667875865593. The reversal of 214667875865557 is 755568578766412.

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

It can be written as a sum of positive squares in 2 ways, for example, as 204690420684036 + 9977455181521 = 14307006^2 + 3158711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214667875865557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214667875866557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25189842708 + ... + 25189851229.

It is an arithmetic number, because the mean of its divisors is an integer number (53679563890939).

Almost surely, 2^{214667875865557} is an apocalyptic number.

It is an amenable number.

214667875865557 is a deficient number, since it is larger than the sum of its proper divisors (50379698199).

214667875865557 is an equidigital number, since it uses as much as digits as its factorization.

214667875865557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50379698198.

The product of its digits is 23708160000, while the sum is 82.

The spelling of 214667875865557 in words is "two hundred fourteen trillion, six hundred sixty-seven billion, eight hundred seventy-five million, eight hundred sixty-five thousand, five hundred fifty-seven".