28461538518 has 16 divisors (see below), whose sum is σ = 65054945280. Its totient is φ = 8131868136.

The previous prime is 28461538493. The next prime is 28461538591. The reversal of 28461538518 is 81583516482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338827798 + ... + 338827881.

It is an arithmetic number, because the mean of its divisors is an integer number (4065934080).

Almost surely, 2^28461538518 is an apocalyptic number.

28461538518 is an abundant number, since it is smaller than the sum of its proper divisors (36593406762).

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

28461538518 is a wasteful number, since it uses less digits than its factorization.

28461538518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677655691.

The product of its digits is 1843200, while the sum is 51.

The spelling of 28461538518 in words is "twenty-eight billion, four hundred sixty-one million, five hundred thirty-eight thousand, five hundred eighteen".