214020687818 has 32 divisors (see below), whose sum is σ = 376856917248. Its totient is φ = 89232710400.

The previous prime is 214020687817. The next prime is 214020687821. The reversal of 214020687818 is 818786020412.

It is a super-2 number, since 2×214020687818² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (214020687817) 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 15 ways as a sum of consecutive naturals, for example, 4904978 + ... + 4948418.

It is an arithmetic number, because the mean of its divisors is an integer number (11776778664).

Almost surely, 2^214020687818 is an apocalyptic number.

214020687818 is a deficient number, since it is larger than the sum of its proper divisors (162836229430).

214020687818 is a wasteful number, since it uses less digits than its factorization.

214020687818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52998.

The product of its (nonzero) digits is 344064, while the sum is 47.

The spelling of 214020687818 in words is "two hundred fourteen billion, twenty million, six hundred eighty-seven thousand, eight hundred eighteen".