111532520009 has 2 divisors, whose sum is σ = 111532520010. Its totient is φ = 111532520008.

The previous prime is 111532519997. The next prime is 111532520053. The reversal of 111532520009 is 900025235111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83436055609 + 28096464400 = 288853^2 + 167620^2 .

It is a cyclic number.

It is not a de Polignac number, because 111532520009 - 2⁴ = 111532519993 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (111532520059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55766260004 + 55766260005.

It is an arithmetic number, because the mean of its divisors is an integer number (55766260005).

Almost surely, 2^111532520009 is an apocalyptic number.

It is an amenable number.

111532520009 is a deficient number, since it is larger than the sum of its proper divisors (1).

111532520009 is an equidigital number, since it uses as much as digits as its factorization.

111532520009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 29.

The spelling of 111532520009 in words is "one hundred eleven billion, five hundred thirty-two million, five hundred twenty thousand, nine".