24428818181 has 2 divisors, whose sum is σ = 24428818182. Its totient is φ = 24428818180.

The previous prime is 24428818123. The next prime is 24428818201. The reversal of 24428818181 is 18181882442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24226922500 + 201895681 = 155650^2 + 14209^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24428818181 is a prime.

It is a super-2 number, since 2×24428818181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24428814181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12214409090 + 12214409091.

It is an arithmetic number, because the mean of its divisors is an integer number (12214409091).

Almost surely, 2^24428818181 is an apocalyptic number.

It is an amenable number.

24428818181 is a deficient number, since it is larger than the sum of its proper divisors (1).

24428818181 is an equidigital number, since it uses as much as digits as its factorization.

24428818181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262144, while the sum is 47.

The spelling of 24428818181 in words is "twenty-four billion, four hundred twenty-eight million, eight hundred eighteen thousand, one hundred eighty-one".