18678666760 has 32 divisors (see below), whose sum is σ = 45259847640. Its totient is φ = 6896738304.

The previous prime is 18678666739. The next prime is 18678666779. The reversal of 18678666760 is 6766687681.

It can be written as a sum of positive squares in 4 ways, for example, as 16059479076 + 2619187684 = 126726^2 + 51178^2 .

It is a super-2 number, since 2×18678666760² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17959737 + ... + 17960776.

Almost surely, 2^18678666760 is an apocalyptic number.

18678666760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18678666760 is an abundant number, since it is smaller than the sum of its proper divisors (26581180880).

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

18678666760 is a wasteful number, since it uses less digits than its factorization.

18678666760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35920537 (or 35920533 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 61.

The spelling of 18678666760 in words is "eighteen billion, six hundred seventy-eight million, six hundred sixty-six thousand, seven hundred sixty".