133391111691 has 32 divisors (see below), whose sum is σ = 180224352000. Its totient is φ = 87751639040.

The previous prime is 133391111681. The next prime is 133391111699. The reversal of 133391111691 is 196111193331.

It is not a de Polignac number, because 133391111691 - 2¹⁵ = 133391078923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133391111699) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105949420 + ... + 105950678.

It is an arithmetic number, because the mean of its divisors is an integer number (5632011000).

Almost surely, 2^133391111691 is an apocalyptic number.

133391111691 is a deficient number, since it is larger than the sum of its proper divisors (46833240309).

133391111691 is a wasteful number, since it uses less digits than its factorization.

133391111691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699.

The product of its digits is 13122, while the sum is 39.

The spelling of 133391111691 in words is "one hundred thirty-three billion, three hundred ninety-one million, one hundred eleven thousand, six hundred ninety-one".