28551685361 has 8 divisors (see below), whose sum is σ = 28738283904. Its totient is φ = 28365508080.

The previous prime is 28551685343. The next prime is 28551685399. The reversal of 28551685361 is 16358615582.

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 28551685361 - 2⁶ = 28551685297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28551684361) 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, 31256 + ... + 240998.

It is an arithmetic number, because the mean of its divisors is an integer number (3592285488).

Almost surely, 2^28551685361 is an apocalyptic number.

It is an amenable number.

28551685361 is a deficient number, since it is larger than the sum of its proper divisors (186598543).

28551685361 is a wasteful number, since it uses less digits than its factorization.

28551685361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210631.

The product of its digits is 1728000, while the sum is 50.

The spelling of 28551685361 in words is "twenty-eight billion, five hundred fifty-one million, six hundred eighty-five thousand, three hundred sixty-one".