24780661028 has 12 divisors (see below), whose sum is σ = 43367530332. Its totient is φ = 12389938080.

The previous prime is 24780661021. The next prime is 24780661051. The reversal of 24780661028 is 82016608742.

It can be written as a sum of positive squares in 2 ways, for example, as 708517924 + 24072143104 = 26618^2 + 155152^2 .

It is a super-2 number, since 2×24780661028² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 24780661028.

It is not an unprimeable number, because it can be changed into a prime (24780661021) 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, 79826 + ... + 236502.

It is an arithmetic number, because the mean of its divisors is an integer number (3613960861).

Almost surely, 2^24780661028 is an apocalyptic number.

It is an amenable number.

24780661028 is a deficient number, since it is larger than the sum of its proper divisors (18586869304).

24780661028 is a wasteful number, since it uses less digits than its factorization.

24780661028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196222 (or 196220 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 24780661028 in words is "twenty-four billion, seven hundred eighty million, six hundred sixty-one thousand, twenty-eight".