201418494660 has 72 divisors (see below), whose sum is σ = 613175251416. Its totient is φ = 53517680640.

The previous prime is 201418494659. The next prime is 201418494661. The reversal of 201418494660 is 66494814102.

201418494660 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 184 + 9 + 466 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (201418494659) and next prime (201418494661).

It can be written as a sum of positive squares in 4 ways, for example, as 47308860036 + 154109634624 = 217506^2 + 392568^2 .

It is a super-2 number, since 2×201418494660² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (201418494661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1969981 + ... + 2069700.

Almost surely, 2^201418494660 is an apocalyptic number.

201418494660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201418494660 is an abundant number, since it is smaller than the sum of its proper divisors (411756756756).

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

201418494660 is a wasteful number, since it uses less digits than its factorization.

201418494660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4039973 (or 4039968 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 201418494660 in words is "two hundred one billion, four hundred eighteen million, four hundred ninety-four thousand, six hundred sixty".