133340503781 has 4 divisors (see below), whose sum is σ = 133356429612. Its totient is φ = 133324577952.

The previous prime is 133340503633. The next prime is 133340503783. The reversal of 133340503781 is 187305043331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67098613156 + 66241890625 = 259034^2 + 257375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133340503781 is a prime.

It is a super-2 number, since 2×133340503781² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133340503783) 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 3 ways as a sum of consecutive naturals, for example, 7950350 + ... + 7967103.

It is an arithmetic number, because the mean of its divisors is an integer number (33339107403).

Almost surely, 2^133340503781 is an apocalyptic number.

It is an amenable number.

133340503781 is a deficient number, since it is larger than the sum of its proper divisors (15925831).

133340503781 is an equidigital number, since it uses as much as digits as its factorization.

133340503781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15925830.

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 133340503781 in words is "one hundred thirty-three billion, three hundred forty million, five hundred three thousand, seven hundred eighty-one".