240511542401 has 4 divisors (see below), whose sum is σ = 259012430292. Its totient is φ = 222010654512.

The previous prime is 240511542367. The next prime is 240511542433. The reversal of 240511542401 is 104245115042.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104245115042 = 2 ⋅52122557521.

It can be written as a sum of positive squares in 2 ways, for example, as 111156226801 + 129355315600 = 333401^2 + 359660^2 .

It is a cyclic number.

It is not a de Polignac number, because 240511542401 - 2²² = 240507348097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (240511542101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9250443926 + ... + 9250443951.

It is an arithmetic number, because the mean of its divisors is an integer number (64753107573).

Almost surely, 2^240511542401 is an apocalyptic number.

It is an amenable number.

240511542401 is a deficient number, since it is larger than the sum of its proper divisors (18500887891).

240511542401 is a wasteful number, since it uses less digits than its factorization.

240511542401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18500887890.

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 240511542401 its reverse (104245115042), we get a palindrome (344756657443).

The spelling of 240511542401 in words is "two hundred forty billion, five hundred eleven million, five hundred forty-two thousand, four hundred one".