16546651650 has 360 divisors, whose sum is σ = 49802537136. Its totient is φ = 4071513600.

The previous prime is 16546651631. The next prime is 16546651663. The reversal of 16546651650 is 5615664561.

16546651650 is a `hidden beast` number, since 1 + 6 + 546 + 6 + 51 + 6 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16546651596 and 16546651605.

It is an unprimeable number.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 78420045 + ... + 78420255.

Almost surely, 2^16546651650 is an apocalyptic number.

16546651650 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 16546651650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24901268568).

16546651650 is an abundant number, since it is smaller than the sum of its proper divisors (33255885486).

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

16546651650 is a wasteful number, since it uses less digits than its factorization.

16546651650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 16546651650 in words is "sixteen billion, five hundred forty-six million, six hundred fifty-one thousand, six hundred fifty".