16501479552 has 192 divisors, whose sum is σ = 49645440000. Its totient is φ = 5254778880.

The previous prime is 16501479541. The next prime is 16501479569. The reversal of 16501479552 is 25597410561.

It is a happy number.

16501479552 is a `hidden beast` number, since 1 + 6 + 50 + 1 + 47 + 9 + 552 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a junction number, because it is equal to n+sod(n) for n = 16501479498 and 16501479507.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2818324 + ... + 2824172.

It is an arithmetic number, because the mean of its divisors is an integer number (258570000).

Almost surely, 2^16501479552 is an apocalyptic number.

16501479552 is a gapful number since it is divisible by the number (12) 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 16501479552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24822720000).

16501479552 is an abundant number, since it is smaller than the sum of its proper divisors (33143960448).

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

16501479552 is a wasteful number, since it uses less digits than its factorization.

16501479552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5979 (or 5964 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The spelling of 16501479552 in words is "sixteen billion, five hundred one million, four hundred seventy-nine thousand, five hundred fifty-two".