133213328497 has 2 divisors, whose sum is σ = 133213328498. Its totient is φ = 133213328496.

The previous prime is 133213328459. The next prime is 133213328503. The reversal of 133213328497 is 794823312331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88587188496 + 44626140001 = 297636^2 + 211249^2 .

It is an emirp because it is prime and its reverse (794823312331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133213328497 is a prime.

It is not a weakly prime, because it can be changed into another prime (133213329497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66606664248 + 66606664249.

It is an arithmetic number, because the mean of its divisors is an integer number (66606664249).

Almost surely, 2^133213328497 is an apocalyptic number.

It is an amenable number.

133213328497 is a deficient number, since it is larger than the sum of its proper divisors (1).

133213328497 is an equidigital number, since it uses as much as digits as its factorization.

133213328497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 46.

The spelling of 133213328497 in words is "one hundred thirty-three billion, two hundred thirteen million, three hundred twenty-eight thousand, four hundred ninety-seven".