16220417550 has 48 divisors (see below), whose sum is σ = 40376277360. Its totient is φ = 4309354240.

The previous prime is 16220417537. The next prime is 16220417557. The reversal of 16220417550 is 5571402261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16220417557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160647 + ... + 241346.

It is an arithmetic number, because the mean of its divisors is an integer number (841172445).

Almost surely, 2^16220417550 is an apocalyptic number.

16220417550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16220417550 is an abundant number, since it is smaller than the sum of its proper divisors (24155859810).

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

16220417550 is a wasteful number, since it uses less digits than its factorization.

16220417550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402277 (or 402272 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The spelling of 16220417550 in words is "sixteen billion, two hundred twenty million, four hundred seventeen thousand, five hundred fifty".