28065051655 has 8 divisors (see below), whose sum is σ = 34499478384. Its totient is φ = 21904430400.

The previous prime is 28065051583. The next prime is 28065051671. The reversal of 28065051655 is 55615056082.

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

It is not a de Polignac number, because 28065051655 - 2²⁵ = 28031497223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68451141 + ... + 68451550.

It is an arithmetic number, because the mean of its divisors is an integer number (4312434798).

Almost surely, 2^28065051655 is an apocalyptic number.

28065051655 is a deficient number, since it is larger than the sum of its proper divisors (6434426729).

28065051655 is a wasteful number, since it uses less digits than its factorization.

28065051655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136902737.

The product of its (nonzero) digits is 360000, while the sum is 43.

The spelling of 28065051655 in words is "twenty-eight billion, sixty-five million, fifty-one thousand, six hundred fifty-five".