16555455510 has 128 divisors (see below), whose sum is σ = 44161459200. Its totient is φ = 3938188800.

The previous prime is 16555455509. The next prime is 16555455541. The reversal of 16555455510 is 1555455561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12057184 + ... + 12058556.

It is an arithmetic number, because the mean of its divisors is an integer number (345011400).

Almost surely, 2^16555455510 is an apocalyptic number.

16555455510 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 16555455510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22080729600).

16555455510 is an abundant number, since it is smaller than the sum of its proper divisors (27606003690).

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

16555455510 is a wasteful number, since it uses less digits than its factorization.

16555455510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054.

The product of its (nonzero) digits is 375000, while the sum is 42.

The spelling of 16555455510 in words is "sixteen billion, five hundred fifty-five million, four hundred fifty-five thousand, five hundred ten".