28081415506 has 16 divisors (see below), whose sum is σ = 42545415744. Its totient is φ = 13899702384.

The previous prime is 28081415501. The next prime is 28081415521. The reversal of 28081415506 is 60551418082.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28081415501) 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, 635136 + ... + 677908.

It is an arithmetic number, because the mean of its divisors is an integer number (2659088484).

Almost surely, 2^28081415506 is an apocalyptic number.

28081415506 is a deficient number, since it is larger than the sum of its proper divisors (14464000238).

28081415506 is a wasteful number, since it uses less digits than its factorization.

28081415506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46065.

The product of its (nonzero) digits is 76800, while the sum is 40.

The spelling of 28081415506 in words is "twenty-eight billion, eighty-one million, four hundred fifteen thousand, five hundred six".