28603340666 has 8 divisors (see below), whose sum is σ = 42916589940. Its totient is φ = 14297810688.

The previous prime is 28603340641. The next prime is 28603340671. The reversal of 28603340666 is 66604330682.

It can be written as a sum of positive squares in 2 ways, for example, as 28601912641 + 1428025 = 169121^2 + 1195^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 1920551 + ... + 1935386.

Almost surely, 2^28603340666 is an apocalyptic number.

28603340666 is a deficient number, since it is larger than the sum of its proper divisors (14313249274).

28603340666 is a wasteful number, since it uses less digits than its factorization.

28603340666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859648.

The product of its (nonzero) digits is 746496, while the sum is 44.

The spelling of 28603340666 in words is "twenty-eight billion, six hundred three million, three hundred forty thousand, six hundred sixty-six".