28665106726457 has 8 divisors (see below), whose sum is σ = 28816958333184. Its totient is φ = 28513289426688.

The previous prime is 28665106726439. The next prime is 28665106726463. The reversal of 28665106726457 is 75462760156682.

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

It is a cyclic number.

It is not a de Polignac number, because 28665106726457 - 2⁶ = 28665106726393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28665106726393 and 28665106726402.

It is not an unprimeable number, because it can be changed into a prime (28665106726057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6900353 + ... + 10244270.

It is an arithmetic number, because the mean of its divisors is an integer number (3602119791648).

Almost surely, 2^{28665106726457} is an apocalyptic number.

It is an amenable number.

28665106726457 is a deficient number, since it is larger than the sum of its proper divisors (151851606727).

28665106726457 is a wasteful number, since it uses less digits than its factorization.

28665106726457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17153479.

The product of its (nonzero) digits is 203212800, while the sum is 65.

The spelling of 28665106726457 in words is "twenty-eight trillion, six hundred sixty-five billion, one hundred six million, seven hundred twenty-six thousand, four hundred fifty-seven".