18288882656551 has 4 divisors (see below), whose sum is σ = 19695719783992. Its totient is φ = 16882045529112.

The previous prime is 18288882656537. The next prime is 18288882656557. The reversal of 18288882656551 is 15565628888281.

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 18288882656551 - 2⁷ = 18288882656423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18288882656557) 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, 703418563701 + ... + 703418563726.

It is an arithmetic number, because the mean of its divisors is an integer number (4923929945998).

Almost surely, 2^{18288882656551} is an apocalyptic number.

18288882656551 is a deficient number, since it is larger than the sum of its proper divisors (1406837127441).

18288882656551 is a wasteful number, since it uses less digits than its factorization.

18288882656551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406837127440.

The product of its digits is 589824000, while the sum is 73.

The spelling of 18288882656551 in words is "eighteen trillion, two hundred eighty-eight billion, eight hundred eighty-two million, six hundred fifty-six thousand, five hundred fifty-one".