28065051656 has 16 divisors (see below), whose sum is σ = 53407375440. Its totient is φ = 13823084880.

The previous prime is 28065051583. The next prime is 28065051671. The reversal of 28065051656 is 65615056082.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26179550 + ... + 26180621.

It is an arithmetic number, because the mean of its divisors is an integer number (3337960965).

Almost surely, 2^28065051656 is an apocalyptic number.

It is an amenable number.

28065051656 is a deficient number, since it is larger than the sum of its proper divisors (25342323784).

28065051656 is a wasteful number, since it uses less digits than its factorization.

28065051656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52360244 (or 52360240 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 28065051656 in words is "twenty-eight billion, sixty-five million, fifty-one thousand, six hundred fifty-six".