240206113273257 has 48 divisors (see below), whose sum is σ = 365892150544128. Its totient is φ = 151551963446400.

The previous prime is 240206113273237. The next prime is 240206113273279. The reversal of 240206113273257 is 752372311602042.

240206113273257 is a `hidden beast` number, since 2 + 4 + 0 + 2 + 0 + 611 + 3 + 2 + 7 + 3 + 25 + 7 = 666.

It is not a de Polignac number, because 240206113273257 - 2¹⁶ = 240206113207721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (240206113273237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18772507 + ... + 28858607.

It is an arithmetic number, because the mean of its divisors is an integer number (7622753136336).

Almost surely, 2^{240206113273257} is an apocalyptic number.

It is an amenable number.

240206113273257 is a deficient number, since it is larger than the sum of its proper divisors (125686037270871).

240206113273257 is a wasteful number, since it uses less digits than its factorization.

240206113273257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10087350 (or 10087347 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

Adding to 240206113273257 its reverse (752372311602042), we get a palindrome (992578424875299).

The spelling of 240206113273257 in words is "two hundred forty trillion, two hundred six billion, one hundred thirteen million, two hundred seventy-three thousand, two hundred fifty-seven".