24642469138 has 16 divisors (see below), whose sum is σ = 43143047424. Its totient is φ = 10336354560.

The previous prime is 24642469109. The next prime is 24642469139. The reversal of 24642469138 is 83196424642.

It is a junction number, because it is equal to n+sod(n) for n = 24642469091 and 24642469100.

It is not an unprimeable number, because it can be changed into a prime (24642469139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18724623 + ... + 18725938.

It is an arithmetic number, because the mean of its divisors is an integer number (2696440464).

Almost surely, 2^24642469138 is an apocalyptic number.

24642469138 is a deficient number, since it is larger than the sum of its proper divisors (18500578286).

24642469138 is a wasteful number, since it uses less digits than its factorization.

24642469138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37450617.

The product of its digits is 1990656, while the sum is 49.

The spelling of 24642469138 in words is "twenty-four billion, six hundred forty-two million, four hundred sixty-nine thousand, one hundred thirty-eight".