201880746660 has 144 divisors (see below), whose sum is σ = 572978952000. Its totient is φ = 53107656960.

The previous prime is 201880746649. The next prime is 201880746673. The reversal of 201880746660 is 66647088102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 326139831 + ... + 326140449.

It is an arithmetic number, because the mean of its divisors is an integer number (3979020500).

Almost surely, 2^201880746660 is an apocalyptic number.

201880746660 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 201880746660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286489476000).

201880746660 is an abundant number, since it is smaller than the sum of its proper divisors (371098205340).

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

201880746660 is a wasteful number, since it uses less digits than its factorization.

201880746660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162 (or 969 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 201880746660 in words is "two hundred one billion, eight hundred eighty million, seven hundred forty-six thousand, six hundred sixty".