24428255981 has 8 divisors (see below), whose sum is σ = 24530476824. Its totient is φ = 24326245440.

The previous prime is 24428255947. The next prime is 24428255987. The reversal of 24428255981 is 18955282442.

It can be written as a sum of positive squares in 4 ways, for example, as 2463533956 + 21964722025 = 49634^2 + 148205^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24428255981 is a prime.

It is a super-2 number, since 2×24428255981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24428255987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182411 + ... + 286583.

It is an arithmetic number, because the mean of its divisors is an integer number (3066309603).

Almost surely, 2^24428255981 is an apocalyptic number.

It is an amenable number.

24428255981 is a deficient number, since it is larger than the sum of its proper divisors (102220843).

24428255981 is a wasteful number, since it uses less digits than its factorization.

24428255981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105151.

The product of its digits is 1843200, while the sum is 50.

The spelling of 24428255981 in words is "twenty-four billion, four hundred twenty-eight million, two hundred fifty-five thousand, nine hundred eighty-one".