18668355000551 has 8 divisors (see below), whose sum is σ = 19871696631600. Its totient is φ = 17487093032640.

The previous prime is 18668355000539. The next prime is 18668355000569. The reversal of 18668355000551 is 15500055386681.

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

It is a cyclic number.

It is not a de Polignac number, because 18668355000551 - 2⁴² = 14270308489447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18668355000493 and 18668355000502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18668355000511) 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, 5519914040 + ... + 5519917421.

It is an arithmetic number, because the mean of its divisors is an integer number (2483962078950).

Almost surely, 2^{18668355000551} is an apocalyptic number.

18668355000551 is a deficient number, since it is larger than the sum of its proper divisors (1203341631049).

18668355000551 is a wasteful number, since it uses less digits than its factorization.

18668355000551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11039831569.

The product of its (nonzero) digits is 4320000, while the sum is 53.

The spelling of 18668355000551 in words is "eighteen trillion, six hundred sixty-eight billion, three hundred fifty-five million, five hundred fifty-one", and thus it is an aban number.