24640480642 has 8 divisors (see below), whose sum is σ = 36979847676. Its totient is φ = 12313864752.

The previous prime is 24640480639. The next prime is 24640480649. The reversal of 24640480642 is 24608404642.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24614785881 + 25694761 = 156891^2 + 5069^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 24640480595 and 24640480604.

It is not an unprimeable number, because it can be changed into a prime (24640480649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3182953 + ... + 3190684.

Almost surely, 2^24640480642 is an apocalyptic number.

24640480642 is a deficient number, since it is larger than the sum of its proper divisors (12339367034).

24640480642 is a wasteful number, since it uses less digits than its factorization.

24640480642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6375572.

The product of its (nonzero) digits is 294912, while the sum is 40.

The spelling of 24640480642 in words is "twenty-four billion, six hundred forty million, four hundred eighty thousand, six hundred forty-two".