214309642993 has 4 divisors (see below), whose sum is σ = 214312714740. Its totient is φ = 214306571248.

The previous prime is 214309642973. The next prime is 214309642997. The reversal of 214309642993 is 399246903412.

It is a happy number.

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 16269512704 + 198040130289 = 127552^2 + 445017^2 .

It is a cyclic number.

It is not a de Polignac number, because 214309642993 - 2¹⁷ = 214309511921 is a prime.

It is a super-2 number, since 2×214309642993² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 214309642993.

It is not an unprimeable number, because it can be changed into a prime (214309642997) 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, 1428730 + ... + 1571587.

It is an arithmetic number, because the mean of its divisors is an integer number (53578178685).

Almost surely, 2^214309642993 is an apocalyptic number.

It is an amenable number.

214309642993 is a deficient number, since it is larger than the sum of its proper divisors (3071747).

214309642993 is an equidigital number, since it uses as much as digits as its factorization.

214309642993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3071746.

The product of its (nonzero) digits is 2519424, while the sum is 52.

The spelling of 214309642993 in words is "two hundred fourteen billion, three hundred nine million, six hundred forty-two thousand, nine hundred ninety-three".