16128772678128 has 480 divisors, whose sum is σ = 47027006078976. Its totient is φ = 4758481728000.

The previous prime is 16128772678093. The next prime is 16128772678141. The reversal of 16128772678128 is 82187627782161.

It is a Harshad number since it is a multiple of its sum of digits (66).

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, 13773502983 + ... + 13773504153.

Almost surely, 2^{16128772678128} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16128772678128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23513503039488).

16128772678128 is an abundant number, since it is smaller than the sum of its proper divisors (30898233400848).

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

16128772678128 is a wasteful number, since it uses less digits than its factorization.

16128772678128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665 (or 1648 counting only the distinct ones).

The product of its digits is 50577408, while the sum is 66.

The spelling of 16128772678128 in words is "sixteen trillion, one hundred twenty-eight billion, seven hundred seventy-two million, six hundred seventy-eight thousand, one hundred twenty-eight".