8551641880651 has 4 divisors (see below), whose sum is σ = 8668787659912. Its totient is φ = 8434496101392.

The previous prime is 8551641880643. The next prime is 8551641880697. The reversal of 8551641880651 is 1560881461558.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8551641880651 - 2³ = 8551641880643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8551641880631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58572889521 + ... + 58572889666.

It is an arithmetic number, because the mean of its divisors is an integer number (2167196914978).

Almost surely, 2^{8551641880651} is an apocalyptic number.

8551641880651 is a deficient number, since it is larger than the sum of its proper divisors (117145779261).

8551641880651 is a wasteful number, since it uses less digits than its factorization.

8551641880651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117145779260.

The product of its (nonzero) digits is 9216000, while the sum is 58.

The spelling of 8551641880651 in words is "eight trillion, five hundred fifty-one billion, six hundred forty-one million, eight hundred eighty thousand, six hundred fifty-one".