111528538797461 has 2 divisors, whose sum is σ = 111528538797462. Its totient is φ = 111528538797460.

The previous prime is 111528538797449. The next prime is 111528538797521. The reversal of 111528538797461 is 164797835825111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60116684715025 + 51411854082436 = 7753495^2 + 7170206^2 .

It is a cyclic number.

It is not a de Polignac number, because 111528538797461 - 2⁶ = 111528538797397 is a prime.

It is a super-2 number, since 2×111528538797461² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111528538797391 and 111528538797400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111528538797421) 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, 55764269398730 + 55764269398731.

It is an arithmetic number, because the mean of its divisors is an integer number (55764269398731).

Almost surely, 2^{111528538797461} is an apocalyptic number.

It is an amenable number.

111528538797461 is a deficient number, since it is larger than the sum of its proper divisors (1).

111528538797461 is an equidigital number, since it uses as much as digits as its factorization.

111528538797461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 101606400, while the sum is 68.

The spelling of 111528538797461 in words is "one hundred eleven trillion, five hundred twenty-eight billion, five hundred thirty-eight million, seven hundred ninety-seven thousand, four hundred sixty-one".