133945278577 has 8 divisors (see below), whose sum is σ = 147568876992. Its totient is φ = 120562806000.

The previous prime is 133945278569. The next prime is 133945278589. The reversal of 133945278577 is 775872549331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133945278577 - 2³ = 133945278569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133915278577) 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 in 7 ways as a sum of consecutive naturals, for example, 60280293 + ... + 60282514.

It is an arithmetic number, because the mean of its divisors is an integer number (18446109624).

Almost surely, 2^133945278577 is an apocalyptic number.

It is an amenable number.

133945278577 is a deficient number, since it is larger than the sum of its proper divisors (13623598415).

133945278577 is a wasteful number, since it uses less digits than its factorization.

133945278577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120562919.

The product of its digits is 44452800, while the sum is 61.

The spelling of 133945278577 in words is "one hundred thirty-three billion, nine hundred forty-five million, two hundred seventy-eight thousand, five hundred seventy-seven".