251245334123345 has 16 divisors (see below), whose sum is σ = 301853326768128. Its totient is φ = 200757083380800.

The previous prime is 251245334123309. The next prime is 251245334123347. The reversal of 251245334123345 is 543321433542152.

It is a de Polignac number, because none of the positive numbers 2^k-251245334123345 is a prime.

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 251245334123345.

It is not an unprimeable number, because it can be changed into a prime (251245334123347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13869692 + ... + 26360178.

It is an arithmetic number, because the mean of its divisors is an integer number (18865832923008).

Almost surely, 2^{251245334123345} is an apocalyptic number.

It is an amenable number.

251245334123345 is a deficient number, since it is larger than the sum of its proper divisors (50607992644783).

251245334123345 is a wasteful number, since it uses less digits than its factorization.

251245334123345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12495280.

The product of its digits is 5184000, while the sum is 47.

Adding to 251245334123345 its reverse (543321433542152), we get a palindrome (794566767665497).

The spelling of 251245334123345 in words is "two hundred fifty-one trillion, two hundred forty-five billion, three hundred thirty-four million, one hundred twenty-three thousand, three hundred forty-five".