111454510061 has 4 divisors (see below), whose sum is σ = 111753316092. Its totient is φ = 111155704032.

The previous prime is 111454510051. The next prime is 111454510073. The reversal of 111454510061 is 160015454111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79950390025 + 31504120036 = 282755^2 + 177494^2 .

It is a cyclic number.

It is not a de Polignac number, because 111454510061 - 2¹⁸ = 111454247917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111454510051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149402456 + ... + 149403201.

It is an arithmetic number, because the mean of its divisors is an integer number (27938329023).

Almost surely, 2^111454510061 is an apocalyptic number.

It is an amenable number.

111454510061 is a deficient number, since it is larger than the sum of its proper divisors (298806031).

111454510061 is an equidigital number, since it uses as much as digits as its factorization.

111454510061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298806030.

The product of its (nonzero) digits is 2400, while the sum is 29.

Adding to 111454510061 its reverse (160015454111), we get a palindrome (271469964172).

The spelling of 111454510061 in words is "one hundred eleven billion, four hundred fifty-four million, five hundred ten thousand, sixty-one".