133138316573 has 2 divisors, whose sum is σ = 133138316574. Its totient is φ = 133138316572.

The previous prime is 133138316491. The next prime is 133138316587. The reversal of 133138316573 is 375613831331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131462806084 + 1675510489 = 362578^2 + 40933^2 .

It is a cyclic number.

It is not a de Polignac number, because 133138316573 - 2¹⁸ = 133138054429 is a prime.

It is a super-2 number, since 2×133138316573² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133138316593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66569158286 + 66569158287.

It is an arithmetic number, because the mean of its divisors is an integer number (66569158287).

Almost surely, 2^133138316573 is an apocalyptic number.

It is an amenable number.

133138316573 is a deficient number, since it is larger than the sum of its proper divisors (1).

133138316573 is an equidigital number, since it uses as much as digits as its factorization.

133138316573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 44.

The spelling of 133138316573 in words is "one hundred thirty-three billion, one hundred thirty-eight million, three hundred sixteen thousand, five hundred seventy-three".