1240550435601 has 12 divisors (see below), whose sum is σ = 1801002157812. Its totient is φ = 822835482336.

The previous prime is 1240550435573. The next prime is 1240550435611. The reversal of 1240550435601 is 1065340550421.

1240550435601 is a `hidden beast` number, since 1 + 2 + 4 + 0 + 5 + 5 + 0 + 43 + 5 + 601 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 705055784976 + 535494650625 = 839676^2 + 731775^2 .

It is not a de Polignac number, because 1240550435601 - 2⁵ = 1240550435569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1240550435611) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 349843246 + ... + 349846791.

It is an arithmetic number, because the mean of its divisors is an integer number (150083513151).

Almost surely, 2^{1240550435601} is an apocalyptic number.

It is an amenable number.

1240550435601 is a deficient number, since it is larger than the sum of its proper divisors (560451722211).

1240550435601 is a wasteful number, since it uses less digits than its factorization.

1240550435601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699690240 (or 699690237 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 1240550435601 in words is "one trillion, two hundred forty billion, five hundred fifty million, four hundred thirty-five thousand, six hundred one".