251163023147 has 2 divisors, whose sum is σ = 251163023148. Its totient is φ = 251163023146.

The previous prime is 251163023107. The next prime is 251163023197. The reversal of 251163023147 is 741320361152.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251163023147 is a prime.

It is not a weakly prime, because it can be changed into another prime (251163023107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125581511573 + 125581511574.

It is an arithmetic number, because the mean of its divisors is an integer number (125581511574).

Almost surely, 2^251163023147 is an apocalyptic number.

251163023147 is a deficient number, since it is larger than the sum of its proper divisors (1).

251163023147 is an equidigital number, since it uses as much as digits as its factorization.

251163023147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

Adding to 251163023147 its reverse (741320361152), we get a palindrome (992483384299).

The spelling of 251163023147 in words is "two hundred fifty-one billion, one hundred sixty-three million, twenty-three thousand, one hundred forty-seven".