201613645320 has 128 divisors (see below), whose sum is σ = 609923865600. Its totient is φ = 53312760576.

The previous prime is 201613645319. The next prime is 201613645327. The reversal of 201613645320 is 23546316102.

201613645320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (201613645327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14788347 + ... + 14801973.

It is an arithmetic number, because the mean of its divisors is an integer number (4765030200).

Almost surely, 2^201613645320 is an apocalyptic number.

201613645320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201613645320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304961932800).

201613645320 is an abundant number, since it is smaller than the sum of its proper divisors (408310220280).

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

201613645320 is a wasteful number, since it uses less digits than its factorization.

201613645320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14667 (or 14663 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 201613645320 in words is "two hundred one billion, six hundred thirteen million, six hundred forty-five thousand, three hundred twenty".