111853367729 has 2 divisors, whose sum is σ = 111853367730. Its totient is φ = 111853367728.

The previous prime is 111853367611. The next prime is 111853367767. The reversal of 111853367729 is 927763358111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76189800625 + 35663567104 = 276025^2 + 188848^2 .

It is a cyclic number.

It is not a de Polignac number, because 111853367729 - 2¹⁶ = 111853302193 is a prime.

It is a super-2 number, since 2×111853367729² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111853367789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55926683864 + 55926683865.

It is an arithmetic number, because the mean of its divisors is an integer number (55926683865).

Almost surely, 2^111853367729 is an apocalyptic number.

It is an amenable number.

111853367729 is a deficient number, since it is larger than the sum of its proper divisors (1).

111853367729 is an equidigital number, since it uses as much as digits as its factorization.

111853367729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 53.

The spelling of 111853367729 in words is "one hundred eleven billion, eight hundred fifty-three million, three hundred sixty-seven thousand, seven hundred twenty-nine".