251340422541113 has 4 divisors (see below), whose sum is σ = 253646297977380. Its totient is φ = 249034547104848.

The previous prime is 251340422541049. The next prime is 251340422541119. The reversal of 251340422541113 is 311145224043152.

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

It can be written as a sum of positive squares in 2 ways, for example, as 214901174802064 + 36439247739049 = 14659508^2 + 6036493^2 .

It is a cyclic number.

It is not a de Polignac number, because 251340422541113 - 2⁶ = 251340422541049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (251340422541119) 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, 1152937717970 + ... + 1152937718187.

It is an arithmetic number, because the mean of its divisors is an integer number (63411574494345).

Almost surely, 2^{251340422541113} is an apocalyptic number.

It is an amenable number.

251340422541113 is a deficient number, since it is larger than the sum of its proper divisors (2305875436267).

251340422541113 is a wasteful number, since it uses less digits than its factorization.

251340422541113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305875436266.

The product of its (nonzero) digits is 115200, while the sum is 38.

Adding to 251340422541113 its reverse (311145224043152), we get a palindrome (562485646584265).

The spelling of 251340422541113 in words is "two hundred fifty-one trillion, three hundred forty billion, four hundred twenty-two million, five hundred forty-one thousand, one hundred thirteen".