16499871630 has 96 divisors (see below), whose sum is σ = 46862655840. Its totient is φ = 3994583040.

The previous prime is 16499871617. The next prime is 16499871637. The reversal of 16499871630 is 3617899461.

16499871630 is a `hidden beast` number, since 16 + 499 + 87 + 1 + 63 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16499871637) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 750474 + ... + 772146.

It is an arithmetic number, because the mean of its divisors is an integer number (488152665).

Almost surely, 2^16499871630 is an apocalyptic number.

16499871630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16499871630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23431327920).

16499871630 is an abundant number, since it is smaller than the sum of its proper divisors (30362784210).

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

16499871630 is a wasteful number, since it uses less digits than its factorization.

16499871630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22466 (or 22463 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 16499871630 in words is "sixteen billion, four hundred ninety-nine million, eight hundred seventy-one thousand, six hundred thirty".