133947781459 has 8 divisors (see below), whose sum is σ = 136808432640. Its totient is φ = 131087576136.

The previous prime is 133947781453. The next prime is 133947781483. The reversal of 133947781459 is 954187749331.

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 133947781459 - 2¹¹ = 133947779411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133947781397 and 133947781406.

It is not an unprimeable number, because it can be changed into a prime (133947781453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535462 + ... + 744724.

It is an arithmetic number, because the mean of its divisors is an integer number (17101054080).

Almost surely, 2^133947781459 is an apocalyptic number.

133947781459 is a deficient number, since it is larger than the sum of its proper divisors (2860651181).

133947781459 is a wasteful number, since it uses less digits than its factorization.

133947781459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222929.

The product of its digits is 22861440, while the sum is 61.

The spelling of 133947781459 in words is "one hundred thirty-three billion, nine hundred forty-seven million, seven hundred eighty-one thousand, four hundred fifty-nine".