201230689660 has 288 divisors, whose sum is σ = 595325832192. Its totient is φ = 55377653760.

The previous prime is 201230689633. The next prime is 201230689669. The reversal of 201230689660 is 66986032102.

It is a super-2 number, since 2×201230689660² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201230689669) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5969172 + ... + 6002788.

It is an arithmetic number, because the mean of its divisors is an integer number (2067103584).

Almost surely, 2^201230689660 is an apocalyptic number.

201230689660 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 201230689660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297662916096).

201230689660 is an abundant number, since it is smaller than the sum of its proper divisors (394095142532).

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

201230689660 is a wasteful number, since it uses less digits than its factorization.

201230689660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33693 (or 33678 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 201230689660 in words is "two hundred one billion, two hundred thirty million, six hundred eighty-nine thousand, six hundred sixty".