16526489616 has 400 divisors, whose sum is σ = 62341259904. Its totient is φ = 4101746688.

The previous prime is 16526489611. The next prime is 16526489657. The reversal of 16526489616 is 61698462561.

16526489616 is a `hidden beast` number, since 16 + 5 + 2 + 6 + 4 + 8 + 9 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (16526489611) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2000791 + ... + 2009033.

Almost surely, 2^16526489616 is an apocalyptic number.

16526489616 is a gapful number since it is divisible by the number (16) 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 16526489616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31170629952).

16526489616 is an abundant number, since it is smaller than the sum of its proper divisors (45814770288).

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

16526489616 is a wasteful number, since it uses less digits than its factorization.

16526489616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8300 (or 8285 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The spelling of 16526489616 in words is "sixteen billion, five hundred twenty-six million, four hundred eighty-nine thousand, six hundred sixteen".