28222681655 has 48 divisors (see below), whose sum is σ = 39641438880. Its totient is φ = 19232898048.

The previous prime is 28222681609. The next prime is 28222681661. The reversal of 28222681655 is 55618622282.

It is not a de Polignac number, because 28222681655 - 2¹² = 28222677559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49600211 + ... + 49600779.

It is an arithmetic number, because the mean of its divisors is an integer number (825863310).

Almost surely, 2^28222681655 is an apocalyptic number.

28222681655 is a deficient number, since it is larger than the sum of its proper divisors (11418757225).

28222681655 is a wasteful number, since it uses less digits than its factorization.

28222681655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488 (or 1481 counting only the distinct ones).

The product of its digits is 921600, while the sum is 47.

The spelling of 28222681655 in words is "twenty-eight billion, two hundred twenty-two million, six hundred eighty-one thousand, six hundred fifty-five".