201209861160 has 640 divisors, whose sum is σ = 846890035200. Its totient is φ = 41797244160.

The previous prime is 201209861131. The next prime is 201209861189. The reversal of 201209861160 is 61168902102.

201209861160 is a `hidden beast` number, since 20 + 12 + 0 + 9 + 8 + 611 + 6 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (201209861131) and next prime (201209861189).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 159 ways as a sum of consecutive naturals, for example, 60621981 + ... + 60625299.

It is an arithmetic number, because the mean of its divisors is an integer number (1323265680).

Almost surely, 2^201209861160 is an apocalyptic number.

201209861160 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 201209861160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (423445017600).

201209861160 is an abundant number, since it is smaller than the sum of its proper divisors (645680174040).

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

201209861160 is an equidigital number, since it uses as much as digits as its factorization.

201209861160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3375 (or 3347 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The spelling of 201209861160 in words is "two hundred one billion, two hundred nine million, eight hundred sixty-one thousand, one hundred sixty".