133681648253 has 2 divisors, whose sum is σ = 133681648254. Its totient is φ = 133681648252.

The previous prime is 133681648241. The next prime is 133681648267. The reversal of 133681648253 is 352846186331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77518810084 + 56162838169 = 278422^2 + 236987^2 .

It is an emirp because it is prime and its reverse (352846186331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133681648253 - 2¹² = 133681644157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133681648213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66840824126 + 66840824127.

It is an arithmetic number, because the mean of its divisors is an integer number (66840824127).

Almost surely, 2^133681648253 is an apocalyptic number.

It is an amenable number.

133681648253 is a deficient number, since it is larger than the sum of its proper divisors (1).

133681648253 is an equidigital number, since it uses as much as digits as its factorization.

133681648253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 50.

The spelling of 133681648253 in words is "one hundred thirty-three billion, six hundred eighty-one million, six hundred forty-eight thousand, two hundred fifty-three".