111528538797397 has 2 divisors, whose sum is σ = 111528538797398. Its totient is φ = 111528538797396.

The previous prime is 111528538797367. The next prime is 111528538797407. The reversal of 111528538797397 is 793797835825111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85822918852356 + 25705619945041 = 9264066^2 + 5070071^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111528538797397 is a prime.

It is a super-2 number, since 2×111528538797397² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111528538797367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55764269398698 + 55764269398699.

It is an arithmetic number, because the mean of its divisors is an integer number (55764269398699).

Almost surely, 2^{111528538797397} is an apocalyptic number.

It is an amenable number.

111528538797397 is a deficient number, since it is larger than the sum of its proper divisors (1).

111528538797397 is an equidigital number, since it uses as much as digits as its factorization.

111528538797397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 800150400, while the sum is 76.

The spelling of 111528538797397 in words is "one hundred eleven trillion, five hundred twenty-eight billion, five hundred thirty-eight million, seven hundred ninety-seven thousand, three hundred ninety-seven".