111453012509 has 2 divisors, whose sum is σ = 111453012510. Its totient is φ = 111453012508.

The previous prime is 111453012499. The next prime is 111453012523. The reversal of 111453012509 is 905210354111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99042384100 + 12410628409 = 314710^2 + 111403^2 .

It is a cyclic number.

It is not a de Polignac number, because 111453012509 - 2⁴ = 111453012493 is a prime.

It is a super-3 number, since 3×111453012509³ (a number of 34 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111453012569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55726506254 + 55726506255.

It is an arithmetic number, because the mean of its divisors is an integer number (55726506255).

Almost surely, 2^111453012509 is an apocalyptic number.

It is an amenable number.

111453012509 is a deficient number, since it is larger than the sum of its proper divisors (1).

111453012509 is an equidigital number, since it uses as much as digits as its factorization.

111453012509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 111453012509 in words is "one hundred eleven billion, four hundred fifty-three million, twelve thousand, five hundred nine".