133409845769 has 2 divisors, whose sum is σ = 133409845770. Its totient is φ = 133409845768.

The previous prime is 133409845747. The next prime is 133409845781. The reversal of 133409845769 is 967548904331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120244578169 + 13165267600 = 346763^2 + 114740^2 .

It is an emirp because it is prime and its reverse (967548904331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133409845769 is a prime.

It is a super-2 number, since 2×133409845769² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133409845169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66704922884 + 66704922885.

It is an arithmetic number, because the mean of its divisors is an integer number (66704922885).

Almost surely, 2^133409845769 is an apocalyptic number.

It is an amenable number.

133409845769 is a deficient number, since it is larger than the sum of its proper divisors (1).

133409845769 is an equidigital number, since it uses as much as digits as its factorization.

133409845769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19595520, while the sum is 59.

The spelling of 133409845769 in words is "one hundred thirty-three billion, four hundred nine million, eight hundred forty-five thousand, seven hundred sixty-nine".