213650634073 has 2 divisors, whose sum is σ = 213650634074. Its totient is φ = 213650634072.

The previous prime is 213650634049. The next prime is 213650634091. The reversal of 213650634073 is 370436056312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200410219584 + 13240414489 = 447672^2 + 115067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213650634073 is a prime.

It is not a weakly prime, because it can be changed into another prime (213650637073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106825317036 + 106825317037.

It is an arithmetic number, because the mean of its divisors is an integer number (106825317037).

Almost surely, 2^213650634073 is an apocalyptic number.

It is an amenable number.

213650634073 is a deficient number, since it is larger than the sum of its proper divisors (1).

213650634073 is an equidigital number, since it uses as much as digits as its factorization.

213650634073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 40.

The spelling of 213650634073 in words is "two hundred thirteen billion, six hundred fifty million, six hundred thirty-four thousand, seventy-three".