133720760566 has 4 divisors (see below), whose sum is σ = 200581140852. Its totient is φ = 66860380282.

The previous prime is 133720760491. The next prime is 133720760567. The reversal of 133720760566 is 665067027331.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133720760567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33430190140 + ... + 33430190143.

It is an arithmetic number, because the mean of its divisors is an integer number (50145285213).

Almost surely, 2^133720760566 is an apocalyptic number.

133720760566 is a deficient number, since it is larger than the sum of its proper divisors (66860380286).

133720760566 is an equidigital number, since it uses as much as digits as its factorization.

133720760566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66860380285.

The product of its (nonzero) digits is 952560, while the sum is 46.

Adding to 133720760566 its reverse (665067027331), we get a palindrome (798787787897).

The spelling of 133720760566 in words is "one hundred thirty-three billion, seven hundred twenty million, seven hundred sixty thousand, five hundred sixty-six".