28561616582 has 8 divisors (see below), whose sum is σ = 45097289400. Its totient is φ = 13529186784.

The previous prime is 28561616537. The next prime is 28561616593.

28561616582 is nontrivially palindromic in base 10.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28561616582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375810707 + ... + 375810782.

It is an arithmetic number, because the mean of its divisors is an integer number (5637161175).

Almost surely, 2^28561616582 is an apocalyptic number.

28561616582 is a deficient number, since it is larger than the sum of its proper divisors (16535672818).

28561616582 is a wasteful number, since it uses less digits than its factorization.

28561616582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751621510.

The product of its digits is 1382400, while the sum is 50.

The spelling of 28561616582 in words is "twenty-eight billion, five hundred sixty-one million, six hundred sixteen thousand, five hundred eighty-two".