24494281981 has 8 divisors (see below), whose sum is σ = 26381728800. Its totient is φ = 22607302512.

The previous prime is 24494281979. The next prime is 24494281991. The reversal of 24494281981 is 18918249442.

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

It is a cyclic number.

It is not a de Polignac number, because 24494281981 - 2¹ = 24494281979 is a prime.

It is a super-2 number, since 2×24494281981² (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 (24494281991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3931 + ... + 221368.

It is an arithmetic number, because the mean of its divisors is an integer number (3297716100).

Almost surely, 2^24494281981 is an apocalyptic number.

It is an amenable number.

24494281981 is a deficient number, since it is larger than the sum of its proper divisors (1887446819).

24494281981 is a wasteful number, since it uses less digits than its factorization.

24494281981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233675.

The product of its digits is 1327104, while the sum is 52.

The spelling of 24494281981 in words is "twenty-four billion, four hundred ninety-four million, two hundred eighty-one thousand, nine hundred eighty-one".