111691357133 has 2 divisors, whose sum is σ = 111691357134. Its totient is φ = 111691357132.

The previous prime is 111691357111. The next prime is 111691357159. The reversal of 111691357133 is 331753196111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104418167044 + 7273190089 = 323138^2 + 85283^2 .

It is a cyclic number.

It is not a de Polignac number, because 111691357133 - 2¹⁴ = 111691340749 is a prime.

It is a super-2 number, since 2×111691357133² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111691357933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55845678566 + 55845678567.

It is an arithmetic number, because the mean of its divisors is an integer number (55845678567).

Almost surely, 2^111691357133 is an apocalyptic number.

It is an amenable number.

111691357133 is a deficient number, since it is larger than the sum of its proper divisors (1).

111691357133 is an equidigital number, since it uses as much as digits as its factorization.

111691357133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51030, while the sum is 41.

The spelling of 111691357133 in words is "one hundred eleven billion, six hundred ninety-one million, three hundred fifty-seven thousand, one hundred thirty-three".