16500254550 has 192 divisors, whose sum is σ = 47471128320. Its totient is φ = 3757985280.

The previous prime is 16500254539. The next prime is 16500254611. The reversal of 16500254550 is 5545200561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1587972 + ... + 1598328.

It is an arithmetic number, because the mean of its divisors is an integer number (247245460).

Almost surely, 2^16500254550 is an apocalyptic number.

16500254550 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 16500254550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23735564160).

16500254550 is an abundant number, since it is smaller than the sum of its proper divisors (30970873770).

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

16500254550 is a wasteful number, since it uses less digits than its factorization.

16500254550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10447 (or 10442 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 16500254550 in words is "sixteen billion, five hundred million, two hundred fifty-four thousand, five hundred fifty".