133471672571 has 4 divisors (see below), whose sum is σ = 134290517352. Its totient is φ = 132652827792.

The previous prime is 133471672567. The next prime is 133471672573. The reversal of 133471672571 is 175276174331.

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

It is a cyclic number.

It is not a de Polignac number, because 133471672571 - 2² = 133471672567 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133471672573) 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 3 ways as a sum of consecutive naturals, for example, 409422146 + ... + 409422471.

It is an arithmetic number, because the mean of its divisors is an integer number (33572629338).

Almost surely, 2^133471672571 is an apocalyptic number.

133471672571 is a deficient number, since it is larger than the sum of its proper divisors (818844781).

133471672571 is an equidigital number, since it uses as much as digits as its factorization.

133471672571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818844780.

The product of its digits is 740880, while the sum is 47.

The spelling of 133471672571 in words is "one hundred thirty-three billion, four hundred seventy-one million, six hundred seventy-two thousand, five hundred seventy-one".