16133323440 has 160 divisors (see below), whose sum is σ = 54773994240. Its totient is φ = 3903925248.

The previous prime is 16133323411. The next prime is 16133323477. The reversal of 16133323440 is 4432333161.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 16133323398 and 16133323407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140259 + ... + 227901.

It is an arithmetic number, because the mean of its divisors is an integer number (342337464).

Almost surely, 2^16133323440 is an apocalyptic number.

16133323440 is a gapful number since it is divisible by the number (10) 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 16133323440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27386997120).

16133323440 is an abundant number, since it is smaller than the sum of its proper divisors (38640670800).

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

16133323440 is a wasteful number, since it uses less digits than its factorization.

16133323440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87731 (or 87725 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 30.

The spelling of 16133323440 in words is "sixteen billion, one hundred thirty-three million, three hundred twenty-three thousand, four hundred forty".