16516424550 has 24 divisors (see below), whose sum is σ = 40960733256. Its totient is φ = 4404379840.

The previous prime is 16516424531. The next prime is 16516424569. The reversal of 16516424550 is 5542461561.

It is an interprime number because it is at equal distance from previous prime (16516424531) and next prime (16516424569).

It is a junction number, because it is equal to n+sod(n) for n = 16516424499 and 16516424508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55054599 + ... + 55054898.

It is an arithmetic number, because the mean of its divisors is an integer number (1706697219).

Almost surely, 2^16516424550 is an apocalyptic number.

16516424550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16516424550 is an abundant number, since it is smaller than the sum of its proper divisors (24444308706).

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

16516424550 is a wasteful number, since it uses less digits than its factorization.

16516424550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110109512 (or 110109507 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 16516424550 in words is "sixteen billion, five hundred sixteen million, four hundred twenty-four thousand, five hundred fifty".