210852678613 has 2 divisors, whose sum is σ = 210852678614. Its totient is φ = 210852678612.

The previous prime is 210852678559. The next prime is 210852678623. The reversal of 210852678613 is 316876258012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182904194929 + 27948483684 = 427673^2 + 167178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210852678613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210852678623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105426339306 + 105426339307.

It is an arithmetic number, because the mean of its divisors is an integer number (105426339307).

Almost surely, 2^210852678613 is an apocalyptic number.

It is an amenable number.

210852678613 is a deficient number, since it is larger than the sum of its proper divisors (1).

210852678613 is an equidigital number, since it uses as much as digits as its factorization.

210852678613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 210852678613 in words is "two hundred ten billion, eight hundred fifty-two million, six hundred seventy-eight thousand, six hundred thirteen".