16650944436 has 96 divisors (see below), whose sum is σ = 45936817920. Its totient is φ = 4595328000.

The previous prime is 16650944399. The next prime is 16650944441. The reversal of 16650944436 is 63444905661.

It is a super-2 number, since 2×16650944436² (a number of 21 digits) contains 22 as substring.

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, 323910 + ... + 371778.

It is an arithmetic number, because the mean of its divisors is an integer number (478508520).

Almost surely, 2^16650944436 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 16650944436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22968408960).

16650944436 is an abundant number, since it is smaller than the sum of its proper divisors (29285873484).

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

16650944436 is a wasteful number, since it uses less digits than its factorization.

16650944436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48025 (or 48023 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 16650944436 in words is "sixteen billion, six hundred fifty million, nine hundred forty-four thousand, four hundred thirty-six".