133355449973 has 2 divisors, whose sum is σ = 133355449974. Its totient is φ = 133355449972.

The previous prime is 133355449933. The next prime is 133355449999. The reversal of 133355449973 is 379944553331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133132306129 + 223143844 = 364873^2 + 14938^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133355449973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133355449933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66677724986 + 66677724987.

It is an arithmetic number, because the mean of its divisors is an integer number (66677724987).

Almost surely, 2^133355449973 is an apocalyptic number.

It is an amenable number.

133355449973 is a deficient number, since it is larger than the sum of its proper divisors (1).

133355449973 is an equidigital number, since it uses as much as digits as its factorization.

133355449973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18370800, while the sum is 56.

The spelling of 133355449973 in words is "one hundred thirty-three billion, three hundred fifty-five million, four hundred forty-nine thousand, nine hundred seventy-three".