16550650620 has 180 divisors, whose sum is σ = 60397029000. Its totient is φ = 3782987712.

The previous prime is 16550650573. The next prime is 16550650637. The reversal of 16550650620 is 2605605561.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 24870 + ... + 183629.

It is an arithmetic number, because the mean of its divisors is an integer number (335539050).

Almost surely, 2^16550650620 is an apocalyptic number.

16550650620 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 16550650620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30198514500).

16550650620 is an abundant number, since it is smaller than the sum of its proper divisors (43846378380).

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

16550650620 is a wasteful number, since it uses less digits than its factorization.

16550650620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208534 (or 208516 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 16550650620 in words is "sixteen billion, five hundred fifty million, six hundred fifty thousand, six hundred twenty".