24643434642 has 16 divisors (see below), whose sum is σ = 49288452672. Its totient is φ = 8214214320.

The previous prime is 24643434637. The next prime is 24643434643.

24643434642 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 24643434594 and 24643434603.

It is not an unprimeable number, because it can be changed into a prime (24643434643) 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, 261048 + ... + 342684.

It is an arithmetic number, because the mean of its divisors is an integer number (3080528292).

Almost surely, 2^24643434642 is an apocalyptic number.

24643434642 is an abundant number, since it is smaller than the sum of its proper divisors (24645018030).

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

24643434642 is a wasteful number, since it uses less digits than its factorization.

24643434642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131953.

The product of its digits is 1327104, while the sum is 42.

The spelling of 24643434642 in words is "twenty-four billion, six hundred forty-three million, four hundred thirty-four thousand, six hundred forty-two".