16206145520 has 20 divisors (see below), whose sum is σ = 37679288520. Its totient is φ = 6482458176.

The previous prime is 16206145519. The next prime is 16206145531. The reversal of 16206145520 is 2554160261.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101288330 + ... + 101288489.

It is an arithmetic number, because the mean of its divisors is an integer number (1883964426).

Almost surely, 2^16206145520 is an apocalyptic number.

16206145520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16206145520 is an abundant number, since it is smaller than the sum of its proper divisors (21473143000).

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

16206145520 is a wasteful number, since it uses less digits than its factorization.

16206145520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202576832 (or 202576826 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 16206145520 in words is "sixteen billion, two hundred six million, one hundred forty-five thousand, five hundred twenty".