213070829549 has 2 divisors, whose sum is σ = 213070829550. Its totient is φ = 213070829548.

The previous prime is 213070829539. The next prime is 213070829579. The reversal of 213070829549 is 945928070312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126344702500 + 86726127049 = 355450^2 + 294493^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213070829549 is a prime.

It is a super-3 number, since 3×213070829549³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213070829497 and 213070829506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213070829539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106535414774 + 106535414775.

It is an arithmetic number, because the mean of its divisors is an integer number (106535414775).

Almost surely, 2^213070829549 is an apocalyptic number.

It is an amenable number.

213070829549 is a deficient number, since it is larger than the sum of its proper divisors (1).

213070829549 is an equidigital number, since it uses as much as digits as its factorization.

213070829549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 213070829549 in words is "two hundred thirteen billion, seventy million, eight hundred twenty-nine thousand, five hundred forty-nine".