133238398973 has 2 divisors, whose sum is σ = 133238398974. Its totient is φ = 133238398972.

The previous prime is 133238398913. The next prime is 133238399051. The reversal of 133238398973 is 379893832331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103032654169 + 30205744804 = 320987^2 + 173798^2 .

It is a cyclic number.

It is not a de Polignac number, because 133238398973 - 2⁸ = 133238398717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133238398913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66619199486 + 66619199487.

It is an arithmetic number, because the mean of its divisors is an integer number (66619199487).

Almost surely, 2^133238398973 is an apocalyptic number.

It is an amenable number.

133238398973 is a deficient number, since it is larger than the sum of its proper divisors (1).

133238398973 is an equidigital number, since it uses as much as digits as its factorization.

133238398973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17635968, while the sum is 59.

The spelling of 133238398973 in words is "one hundred thirty-three billion, two hundred thirty-eight million, three hundred ninety-eight thousand, nine hundred seventy-three".