133285305648377 has 4 divisors (see below), whose sum is σ = 133286389929360. Its totient is φ = 133284221367396.

The previous prime is 133285305648347. The next prime is 133285305648413. The reversal of 133285305648377 is 773846503582331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133285305648377 - 2²² = 133285301454073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133285305648347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541956083 + ... + 542201960.

It is an arithmetic number, because the mean of its divisors is an integer number (33321597482340).

Almost surely, 2^{133285305648377} is an apocalyptic number.

It is an amenable number.

133285305648377 is a deficient number, since it is larger than the sum of its proper divisors (1084280983).

133285305648377 is a wasteful number, since it uses less digits than its factorization.

133285305648377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084280982.

The product of its (nonzero) digits is 304819200, while the sum is 65.

The spelling of 133285305648377 in words is "one hundred thirty-three trillion, two hundred eighty-five billion, three hundred five million, six hundred forty-eight thousand, three hundred seventy-seven".