18966928680 has 256 divisors, whose sum is σ = 72921024000. Its totient is φ = 4295337984.

The previous prime is 18966928663. The next prime is 18966928769. The reversal of 18966928680 is 8682966981.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 812532 + ... + 835548.

It is an arithmetic number, because the mean of its divisors is an integer number (284847750).

Almost surely, 2^18966928680 is an apocalyptic number.

18966928680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18966928680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36460512000).

18966928680 is an abundant number, since it is smaller than the sum of its proper divisors (53954095320).

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

18966928680 is a wasteful number, since it uses less digits than its factorization.

18966928680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23153 (or 23143 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 63.

The spelling of 18966928680 in words is "eighteen billion, nine hundred sixty-six million, nine hundred twenty-eight thousand, six hundred eighty".