240304121345453 has 4 divisors (see below), whose sum is σ = 262149950558688. Its totient is φ = 218458292132220.

The previous prime is 240304121345441. The next prime is 240304121345459. The reversal of 240304121345453 is 354543121403042.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 240304121345453 - 2⁴ = 240304121345437 is a prime.

It is a super-2 number, since 2×240304121345453² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240304121345453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240304121345459) 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, 10922914606601 + ... + 10922914606622.

It is an arithmetic number, because the mean of its divisors is an integer number (65537487639672).

Almost surely, 2^{240304121345453} is an apocalyptic number.

It is an amenable number.

240304121345453 is a deficient number, since it is larger than the sum of its proper divisors (21845829213235).

240304121345453 is a wasteful number, since it uses less digits than its factorization.

240304121345453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21845829213234.

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 240304121345453 its reverse (354543121403042), we get a palindrome (594847242748495).

The spelling of 240304121345453 in words is "two hundred forty trillion, three hundred four billion, one hundred twenty-one million, three hundred forty-five thousand, four hundred fifty-three".