16929444840 has 256 divisors, whose sum is σ = 65505024000. Its totient is φ = 3396449280.

The previous prime is 16929444799. The next prime is 16929444841. The reversal of 16929444840 is 4844492961.

It is a happy number.

It is a super-2 number, since 2×16929444840² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16929444841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 236371 + ... + 299549.

It is an arithmetic number, because the mean of its divisors is an integer number (255879000).

Almost surely, 2^16929444840 is an apocalyptic number.

16929444840 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 16929444840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32752512000).

16929444840 is an abundant number, since it is smaller than the sum of its proper divisors (48575579160).

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

16929444840 is a wasteful number, since it uses less digits than its factorization.

16929444840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63240 (or 63236 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 51.

The spelling of 16929444840 in words is "sixteen billion, nine hundred twenty-nine million, four hundred forty-four thousand, eight hundred forty".