133531501885 has 8 divisors (see below), whose sum is σ = 160249432536. Its totient is φ = 106817448000.

The previous prime is 133531501871. The next prime is 133531501913. The reversal of 133531501885 is 588105135331.

It can be written as a sum of positive squares in 4 ways, for example, as 11292462756 + 122239039129 = 106266^2 + 349627^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133531501885 - 2⁵ = 133531501853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 892866 + ... + 1031635.

It is an arithmetic number, because the mean of its divisors is an integer number (20031179067).

Almost surely, 2^133531501885 is an apocalyptic number.

It is an amenable number.

133531501885 is a deficient number, since it is larger than the sum of its proper divisors (26717930651).

133531501885 is a wasteful number, since it uses less digits than its factorization.

133531501885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938383.

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 133531501885 in words is "one hundred thirty-three billion, five hundred thirty-one million, five hundred one thousand, eight hundred eighty-five".