24161489861 has 2 divisors, whose sum is σ = 24161489862. Its totient is φ = 24161489860.

The previous prime is 24161489839. The next prime is 24161489873. The reversal of 24161489861 is 16898416142.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12923369761 + 11238120100 = 113681^2 + 106010^2 .

It is a cyclic number.

It is not a de Polignac number, because 24161489861 - 2¹⁰ = 24161488837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24161489161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12080744930 + 12080744931.

It is an arithmetic number, because the mean of its divisors is an integer number (12080744931).

Almost surely, 2^24161489861 is an apocalyptic number.

It is an amenable number.

24161489861 is a deficient number, since it is larger than the sum of its proper divisors (1).

24161489861 is an equidigital number, since it uses as much as digits as its factorization.

24161489861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 663552, while the sum is 50.

The spelling of 24161489861 in words is "twenty-four billion, one hundred sixty-one million, four hundred eighty-nine thousand, eight hundred sixty-one".