213920684507 has 2 divisors, whose sum is σ = 213920684508. Its totient is φ = 213920684506.

The previous prime is 213920684503. The next prime is 213920684531. The reversal of 213920684507 is 705486029312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213920684507 - 2² = 213920684503 is a prime.

It is not a weakly prime, because it can be changed into another prime (213920684501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106960342253 + 106960342254.

It is an arithmetic number, because the mean of its divisors is an integer number (106960342254).

It is a 1-persistent number, because it is pandigital, but 2⋅213920684507 = 427841369014 is not.

Almost surely, 2^213920684507 is an apocalyptic number.

213920684507 is a deficient number, since it is larger than the sum of its proper divisors (1).

213920684507 is an equidigital number, since it uses as much as digits as its factorization.

213920684507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 213920684507 in words is "two hundred thirteen billion, nine hundred twenty million, six hundred eighty-four thousand, five hundred seven".