201101430440 has 16 divisors (see below), whose sum is σ = 452478218580. Its totient is φ = 80440572160.

The previous prime is 201101430379. The next prime is 201101430443. The reversal of 201101430440 is 44034101102.

It can be written as a sum of positive squares in 2 ways, for example, as 197859494596 + 3241935844 = 444814^2 + 56938^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (201101430443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2513767841 + ... + 2513767920.

Almost surely, 2^201101430440 is an apocalyptic number.

201101430440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201101430440 is an abundant number, since it is smaller than the sum of its proper divisors (251376788140).

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

201101430440 is a wasteful number, since it uses less digits than its factorization.

201101430440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027535772 (or 5027535768 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 201101430440 its reverse (44034101102), we get a palindrome (245135531542).

The spelling of 201101430440 in words is "two hundred one billion, one hundred one million, four hundred thirty thousand, four hundred forty".