240145320551 has 4 divisors (see below), whose sum is σ = 240156038472. Its totient is φ = 240134602632.

The previous prime is 240145320523. The next prime is 240145320563. The reversal of 240145320551 is 155023541042.

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 240145320551 - 2³⁴ = 222965451367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240175320551) 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, 5325281 + ... + 5370186.

It is an arithmetic number, because the mean of its divisors is an integer number (60039009618).

Almost surely, 2^240145320551 is an apocalyptic number.

240145320551 is a deficient number, since it is larger than the sum of its proper divisors (10717921).

240145320551 is a wasteful number, since it uses less digits than its factorization.

240145320551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10717920.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 240145320551 its reverse (155023541042), we get a palindrome (395168861593).

The spelling of 240145320551 in words is "two hundred forty billion, one hundred forty-five million, three hundred twenty thousand, five hundred fifty-one".