214136664621 has 24 divisors (see below), whose sum is σ = 315457316160. Its totient is φ = 129107320320.

The previous prime is 214136664617. The next prime is 214136664671. The reversal of 214136664621 is 126466631412.

214136664621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 214136664621 - 2² = 214136664617 is a prime.

It is a super-2 number, since 2×214136664621² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214136664671) 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 23 ways as a sum of consecutive naturals, for example, 1458201 + ... + 1598318.

It is an arithmetic number, because the mean of its divisors is an integer number (13144054840).

Almost surely, 2^214136664621 is an apocalyptic number.

It is an amenable number.

214136664621 is a deficient number, since it is larger than the sum of its proper divisors (101320651539).

214136664621 is a wasteful number, since it uses less digits than its factorization.

214136664621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056737 (or 3056726 counting only the distinct ones).

The product of its digits is 248832, while the sum is 42.

The spelling of 214136664621 in words is "two hundred fourteen billion, one hundred thirty-six million, six hundred sixty-four thousand, six hundred twenty-one".