133121179649 has 2 divisors, whose sum is σ = 133121179650. Its totient is φ = 133121179648.

The previous prime is 133121179643. The next prime is 133121179661. The reversal of 133121179649 is 946971121331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132454507249 + 666672400 = 363943^2 + 25820^2 .

It is a cyclic number.

It is not a de Polignac number, because 133121179649 - 2²⁰ = 133120131073 is a prime.

It is a super-2 number, since 2×133121179649² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133121179643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66560589824 + 66560589825.

It is an arithmetic number, because the mean of its divisors is an integer number (66560589825).

Almost surely, 2^133121179649 is an apocalyptic number.

It is an amenable number.

133121179649 is a deficient number, since it is larger than the sum of its proper divisors (1).

133121179649 is an equidigital number, since it uses as much as digits as its factorization.

133121179649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 47.

The spelling of 133121179649 in words is "one hundred thirty-three billion, one hundred twenty-one million, one hundred seventy-nine thousand, six hundred forty-nine".