16251683648 has 56 divisors (see below), whose sum is σ = 33203083200. Its totient is φ = 7887559680.

The previous prime is 16251683627. The next prime is 16251683653. The reversal of 16251683648 is 84638615261.

It is a junction number, because it is equal to n+sod(n) for n = 16251683596 and 16251683605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506615 + ... + 537737.

It is an arithmetic number, because the mean of its divisors is an integer number (592912200).

Almost surely, 2^16251683648 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 16251683648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16601541600).

16251683648 is an abundant number, since it is smaller than the sum of its proper divisors (16951399552).

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

16251683648 is a wasteful number, since it uses less digits than its factorization.

16251683648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31375 (or 31365 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 50.

The spelling of 16251683648 in words is "sixteen billion, two hundred fifty-one million, six hundred eighty-three thousand, six hundred forty-eight".