111235645541 has 2 divisors, whose sum is σ = 111235645542. Its totient is φ = 111235645540.

The previous prime is 111235645517. The next prime is 111235645567. The reversal of 111235645541 is 145546532111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93043300900 + 18192344641 = 305030^2 + 134879^2 .

It is an emirp because it is prime and its reverse (145546532111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111235645541 - 2¹⁰ = 111235644517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111235645495 and 111235645504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111235645501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55617822770 + 55617822771.

It is an arithmetic number, because the mean of its divisors is an integer number (55617822771).

Almost surely, 2^111235645541 is an apocalyptic number.

It is an amenable number.

111235645541 is a deficient number, since it is larger than the sum of its proper divisors (1).

111235645541 is an equidigital number, since it uses as much as digits as its factorization.

111235645541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 38.

The spelling of 111235645541 in words is "one hundred eleven billion, two hundred thirty-five million, six hundred forty-five thousand, five hundred forty-one".