16155426816 has 135 divisors (see below), whose sum is σ = 46811231103. Its totient is φ = 5368872960.

The previous prime is 16155426811. The next prime is 16155426823. The reversal of 16155426816 is 61862455161.

The square root of 16155426816 is 127104.

It is a perfect power (a square), and thus also a powerful number.

16155426816 is a `hidden beast` number, since 1 + 61 + 554 + 26 + 8 + 16 = 666.

It is not an unprimeable number, because it can be changed into a prime (16155426811) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 48807771 + ... + 48808101.

Almost surely, 2^16155426816 is an apocalyptic number.

16155426816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

16155426816 is the 127104-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16155426816

16155426816 is an abundant number, since it is smaller than the sum of its proper divisors (30655804287).

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

16155426816 is an frugal number, since it uses more digits than its factorization.

16155426816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 336 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The spelling of 16155426816 in words is "sixteen billion, one hundred fifty-five million, four hundred twenty-six thousand, eight hundred sixteen".