240253105424551 has 4 divisors (see below), whose sum is σ = 240253352503504. Its totient is φ = 240252858345600.

The previous prime is 240253105424477. The next prime is 240253105424729. The reversal of 240253105424551 is 155424501352042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 240253105424551 - 2¹¹ = 240253105422503 is a prime.

It is a super-2 number, since 2×240253105424551² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240253105424498 and 240253105424507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240253105464551) 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, 122075130 + ... + 124027591.

It is an arithmetic number, because the mean of its divisors is an integer number (60063338125876).

Almost surely, 2^{240253105424551} is an apocalyptic number.

240253105424551 is a deficient number, since it is larger than the sum of its proper divisors (247078953).

240253105424551 is an equidigital number, since it uses as much as digits as its factorization.

240253105424551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247078952.

The product of its (nonzero) digits is 960000, while the sum is 43.

Adding to 240253105424551 its reverse (155424501352042), we get a palindrome (395677606776593).

The spelling of 240253105424551 in words is "two hundred forty trillion, two hundred fifty-three billion, one hundred five million, four hundred twenty-four thousand, five hundred fifty-one".