111680439653 has 2 divisors, whose sum is σ = 111680439654. Its totient is φ = 111680439652.

The previous prime is 111680439623. The next prime is 111680439691. The reversal of 111680439653 is 356934086111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101033708164 + 10646731489 = 317858^2 + 103183^2 .

It is an emirp because it is prime and its reverse (356934086111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111680439653 - 2²² = 111676245349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111680439598 and 111680439607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111680439623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55840219826 + 55840219827.

It is an arithmetic number, because the mean of its divisors is an integer number (55840219827).

Almost surely, 2^111680439653 is an apocalyptic number.

It is an amenable number.

111680439653 is a deficient number, since it is larger than the sum of its proper divisors (1).

111680439653 is an equidigital number, since it uses as much as digits as its factorization.

111680439653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 111680439653 in words is "one hundred eleven billion, six hundred eighty million, four hundred thirty-nine thousand, six hundred fifty-three".