16363987662078 has 160 divisors (see below), whose sum is σ = 44380832373504. Its totient is φ = 4399395234048.

The previous prime is 16363987662059. The next prime is 16363987662083. The reversal of 16363987662078 is 87026678936361.

16363987662078 is a `hidden beast` number, since 16 + 36 + 398 + 76 + 62 + 0 + 78 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16363987661997 and 16363987662015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 86328601 + ... + 86517947.

Almost surely, 2^{16363987662078} is an apocalyptic number.

16363987662078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16363987662078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22190416186752).

16363987662078 is an abundant number, since it is smaller than the sum of its proper divisors (28016844711426).

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

16363987662078 is a wasteful number, since it uses less digits than its factorization.

16363987662078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193868 (or 193859 counting only the distinct ones).

The product of its (nonzero) digits is 658409472, while the sum is 72.

The spelling of 16363987662078 in words is "sixteen trillion, three hundred sixty-three billion, nine hundred eighty-seven million, six hundred sixty-two thousand, seventy-eight".