18678845016 has 96 divisors (see below), whose sum is σ = 56358666000. Its totient is φ = 5549144832.

The previous prime is 18678844967. The next prime is 18678845027. The reversal of 18678845016 is 61054887681.

It is a happy number.

18678845016 is a `hidden beast` number, since 186 + 7 + 8 + 8 + 450 + 1 + 6 = 666.

It is a super-2 number, since 2×18678845016² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 316926 + ... + 371213.

Almost surely, 2^18678845016 is an apocalyptic number.

It is an amenable number.

18678845016 is an abundant number, since it is smaller than the sum of its proper divisors (37679820984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18678845016 is a wasteful number, since it uses less digits than its factorization.

18678845016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688193 (or 688186 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The spelling of 18678845016 in words is "eighteen billion, six hundred seventy-eight million, eight hundred forty-five thousand, sixteen".