111540332537 has 2 divisors, whose sum is σ = 111540332538. Its totient is φ = 111540332536.

The previous prime is 111540332473. The next prime is 111540332543. The reversal of 111540332537 is 735233045111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90856427776 + 20683904761 = 301424^2 + 143819^2 .

It is a cyclic number.

It is not a de Polignac number, because 111540332537 - 2⁶ = 111540332473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111540332497 and 111540332506.

It is not a weakly prime, because it can be changed into another prime (111540302537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55770166268 + 55770166269.

It is an arithmetic number, because the mean of its divisors is an integer number (55770166269).

Almost surely, 2^111540332537 is an apocalyptic number.

It is an amenable number.

111540332537 is a deficient number, since it is larger than the sum of its proper divisors (1).

111540332537 is an equidigital number, since it uses as much as digits as its factorization.

111540332537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 35.

Adding to 111540332537 its reverse (735233045111), we get a palindrome (846773377648).

The spelling of 111540332537 in words is "one hundred eleven billion, five hundred forty million, three hundred thirty-two thousand, five hundred thirty-seven".