24878478840 has 128 divisors (see below), whose sum is σ = 77703658560. Its totient is φ = 6366449664.

The previous prime is 24878478797. The next prime is 24878478841. The reversal of 24878478840 is 4887487842.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24878478841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285742 + ... + 362498.

Almost surely, 2^24878478840 is an apocalyptic number.

24878478840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 24878478840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38851829280).

24878478840 is an abundant number, since it is smaller than the sum of its proper divisors (52825179720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

24878478840 is a wasteful number, since it uses less digits than its factorization.

24878478840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76881 (or 76877 counting only the distinct ones).

The product of its (nonzero) digits is 25690112, while the sum is 60.

The spelling of 24878478840 in words is "twenty-four billion, eight hundred seventy-eight million, four hundred seventy-eight thousand, eight hundred forty".