11116898447561 has 16 divisors (see below), whose sum is σ = 11248331846400. Its totient is φ = 10985894304000.

The previous prime is 11116898447537. The next prime is 11116898447573. The reversal of 11116898447561 is 16574489861111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11116898447561 - 2⁶ = 11116898447497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11116898447494 and 11116898447503.

It is not an unprimeable number, because it can be changed into a prime (11116898447461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235110320 + ... + 235157598.

It is an arithmetic number, because the mean of its divisors is an integer number (703020740400).

Almost surely, 2^{11116898447561} is an apocalyptic number.

It is an amenable number.

11116898447561 is a deficient number, since it is larger than the sum of its proper divisors (131433398839).

11116898447561 is a wasteful number, since it uses less digits than its factorization.

11116898447561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51760.

The product of its digits is 11612160, while the sum is 62.

The spelling of 11116898447561 in words is "eleven trillion, one hundred sixteen billion, eight hundred ninety-eight million, four hundred forty-seven thousand, five hundred sixty-one".