240251142243151 has 4 divisors (see below), whose sum is σ = 258731999338792. Its totient is φ = 221770285147512.

The previous prime is 240251142243139. The next prime is 240251142243179. The reversal of 240251142243151 is 151342241152042.

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 240251142243151 - 2⁷ = 240251142243023 is a prime.

It is a super-2 number, since 2×240251142243151² (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 240251142243151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240251142223151) 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, 9240428547801 + ... + 9240428547826.

It is an arithmetic number, because the mean of its divisors is an integer number (64682999834698).

Almost surely, 2^{240251142243151} is an apocalyptic number.

240251142243151 is a deficient number, since it is larger than the sum of its proper divisors (18480857095641).

240251142243151 is a wasteful number, since it uses less digits than its factorization.

240251142243151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18480857095640.

The product of its (nonzero) digits is 76800, while the sum is 37.

Adding to 240251142243151 its reverse (151342241152042), we get a palindrome (391593383395193).

The spelling of 240251142243151 in words is "two hundred forty trillion, two hundred fifty-one billion, one hundred forty-two million, two hundred forty-three thousand, one hundred fifty-one".