16318716685920 has 576 divisors, whose sum is σ = 62908796059200. Its totient is φ = 3815757496320.

The previous prime is 16318716685919. The next prime is 16318716685969. The reversal of 16318716685920 is 2958661781361.

16318716685920 is a `hidden beast` number, since 1 + 6 + 31 + 8 + 7 + 1 + 6 + 6 + 8 + 592 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 465314146 + ... + 465349214.

It is an arithmetic number, because the mean of its divisors is an integer number (109216659825).

Almost surely, 2^{16318716685920} is an apocalyptic number.

16318716685920 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 16318716685920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31454398029600).

16318716685920 is an abundant number, since it is smaller than the sum of its proper divisors (46590079373280).

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

16318716685920 is a wasteful number, since it uses less digits than its factorization.

16318716685920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36143 (or 36132 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The spelling of 16318716685920 in words is "sixteen trillion, three hundred eighteen billion, seven hundred sixteen million, six hundred eighty-five thousand, nine hundred twenty".