251345121141 has 12 divisors (see below), whose sum is σ = 340903231232. Its totient is φ = 164723349384.

The previous prime is 251345121121. The next prime is 251345121143. The reversal of 251345121141 is 141121543152.

It is not a de Polignac number, because 251345121141 - 2¹⁷ = 251344990069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 251345121099 and 251345121108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251345121143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12023701 + ... + 12044586.

Almost surely, 2^251345121141 is an apocalyptic number.

It is an amenable number.

251345121141 is a deficient number, since it is larger than the sum of its proper divisors (89558110091).

251345121141 is an equidigital number, since it uses as much as digits as its factorization.

251345121141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24068408 (or 24068349 counting only the distinct ones).

The product of its digits is 4800, while the sum is 30.

Adding to 251345121141 its reverse (141121543152), we get a palindrome (392466664293).

The spelling of 251345121141 in words is "two hundred fifty-one billion, three hundred forty-five million, one hundred twenty-one thousand, one hundred forty-one".