8551133315505 has 96 divisors (see below), whose sum is σ = 16840255985280. Its totient is φ = 4128208519680.

The previous prime is 8551133315489. The next prime is 8551133315531. The reversal of 8551133315505 is 5055133311558.

It is a happy number.

8551133315505 is a `hidden beast` number, since 8 + 5 + 5 + 1 + 133 + 3 + 1 + 5 + 505 = 666.

It is not a de Polignac number, because 8551133315505 - 2⁴ = 8551133315489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1741051 + ... + 4487039.

It is an arithmetic number, because the mean of its divisors is an integer number (175419333180).

Almost surely, 2^{8551133315505} is an apocalyptic number.

It is an amenable number.

8551133315505 is a deficient number, since it is larger than the sum of its proper divisors (8289122669775).

8551133315505 is a wasteful number, since it uses less digits than its factorization.

8551133315505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2746253 (or 2746241 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 8551133315505 in words is "eight trillion, five hundred fifty-one billion, one hundred thirty-three million, three hundred fifteen thousand, five hundred five".