24139781948 has 24 divisors (see below), whose sum is σ = 42346348800. Its totient is φ = 12040858368.

The previous prime is 24139781947. The next prime is 24139781969. The reversal of 24139781948 is 84918793142.

It is a happy number.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 24139781893 and 24139781902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24139781947) 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 7 ways as a sum of consecutive naturals, for example, 3967973 + ... + 3974051.

It is an arithmetic number, because the mean of its divisors is an integer number (1764431200).

Almost surely, 2^24139781948 is an apocalyptic number.

It is an amenable number.

24139781948 is a deficient number, since it is larger than the sum of its proper divisors (18206566852).

24139781948 is a wasteful number, since it uses less digits than its factorization.

24139781948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8309 (or 8307 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 56.

The spelling of 24139781948 in words is "twenty-four billion, one hundred thirty-nine million, seven hundred eighty-one thousand, nine hundred forty-eight".