18716906928440 has 192 divisors, whose sum is σ = 49967673569280. Its totient is φ = 6180766905600.

The previous prime is 18716906928397. The next prime is 18716906928449. The reversal of 18716906928440 is 4482960961781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18716906928449) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56611049 + ... + 56940711.

It is an arithmetic number, because the mean of its divisors is an integer number (260248299840).

Almost surely, 2^{18716906928440} is an apocalyptic number.

18716906928440 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 18716906928440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24983836784640).

18716906928440 is an abundant number, since it is smaller than the sum of its proper divisors (31250766640840).

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

18716906928440 is a wasteful number, since it uses less digits than its factorization.

18716906928440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329954 (or 329919 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 65.

The spelling of 18716906928440 in words is "eighteen trillion, seven hundred sixteen billion, nine hundred six million, nine hundred twenty-eight thousand, four hundred forty".