16649259504 has 320 divisors, whose sum is σ = 48836874240. Its totient is φ = 4863006720.

The previous prime is 16649259499. The next prime is 16649259521. The reversal of 16649259504 is 40595294661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 127093519 + ... + 127093649.

It is an arithmetic number, because the mean of its divisors is an integer number (152615232).

Almost surely, 2^16649259504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16649259504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24418437120).

16649259504 is an abundant number, since it is smaller than the sum of its proper divisors (32187614736).

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

16649259504 is a wasteful number, since it uses less digits than its factorization.

16649259504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 16649259504 in words is "sixteen billion, six hundred forty-nine million, two hundred fifty-nine thousand, five hundred four".