28513686751445 has 32 divisors (see below), whose sum is σ = 39245353079040. Its totient is φ = 19481814213120.

The previous prime is 28513686751439. The next prime is 28513686751463. The reversal of 28513686751445 is 54415768631582.

It is not a de Polignac number, because 28513686751445 - 2¹² = 28513686747349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297549359 + ... + 297645171.

It is an arithmetic number, because the mean of its divisors is an integer number (1226417283720).

Almost surely, 2^{28513686751445} is an apocalyptic number.

It is an amenable number.

28513686751445 is a deficient number, since it is larger than the sum of its proper divisors (10731666327595).

28513686751445 is a wasteful number, since it uses less digits than its factorization.

28513686751445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126365.

The product of its digits is 193536000, while the sum is 65.

The spelling of 28513686751445 in words is "twenty-eight trillion, five hundred thirteen billion, six hundred eighty-six million, seven hundred fifty-one thousand, four hundred forty-five".