16555489104 has 160 divisors (see below), whose sum is σ = 53763701760. Its totient is φ = 4300010880.

The previous prime is 16555489099. The next prime is 16555489123. The reversal of 16555489104 is 40198455561.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 428707 + ... + 465725.

It is an arithmetic number, because the mean of its divisors is an integer number (336023136).

Almost surely, 2^16555489104 is an apocalyptic number.

16555489104 is a gapful number since it is divisible by the number (14) 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 16555489104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26881850880).

16555489104 is an abundant number, since it is smaller than the sum of its proper divisors (37208212656).

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

16555489104 is a wasteful number, since it uses less digits than its factorization.

16555489104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37070 (or 37042 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 48.

The spelling of 16555489104 in words is "sixteen billion, five hundred fifty-five million, four hundred eighty-nine thousand, one hundred four".