133531501911 has 4 divisors (see below), whose sum is σ = 178042002552. Its totient is φ = 89021001272.

The previous prime is 133531501871. The next prime is 133531501913. The reversal of 133531501911 is 119105135331.

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 133531501911 - 2¹⁵ = 133531469143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133531501913) 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, 22255250316 + ... + 22255250321.

It is an arithmetic number, because the mean of its divisors is an integer number (44510500638).

Almost surely, 2^133531501911 is an apocalyptic number.

133531501911 is a deficient number, since it is larger than the sum of its proper divisors (44510500641).

133531501911 is an equidigital number, since it uses as much as digits as its factorization.

133531501911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44510500640.

The product of its (nonzero) digits is 6075, while the sum is 33.

The spelling of 133531501911 in words is "one hundred thirty-three billion, five hundred thirty-one million, five hundred one thousand, nine hundred eleven".