28581576413 has 16 divisors (see below), whose sum is σ = 31492067712. Its totient is φ = 25778520000.

The previous prime is 28581576407. The next prime is 28581576479. The reversal of 28581576413 is 31467518582.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28581576413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28581576403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398 + ... + 239088.

It is an arithmetic number, because the mean of its divisors is an integer number (1968254232).

Almost surely, 2^28581576413 is an apocalyptic number.

It is an amenable number.

28581576413 is a deficient number, since it is larger than the sum of its proper divisors (2910491299).

28581576413 is a wasteful number, since it uses less digits than its factorization.

28581576413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238916.

The product of its digits is 1612800, while the sum is 50.

The spelling of 28581576413 in words is "twenty-eight billion, five hundred eighty-one million, five hundred seventy-six thousand, four hundred thirteen".