245317027651 has 2 divisors, whose sum is σ = 245317027652. Its totient is φ = 245317027650.

The previous prime is 245317027603. The next prime is 245317027661. The reversal of 245317027651 is 156720713542.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245317027651 - 2¹⁵ = 245316994883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 245317027598 and 245317027607.

It is not a weakly prime, because it can be changed into another prime (245317027661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122658513825 + 122658513826.

It is an arithmetic number, because the mean of its divisors is an integer number (122658513826).

Almost surely, 2^245317027651 is an apocalyptic number.

245317027651 is a deficient number, since it is larger than the sum of its proper divisors (1).

245317027651 is an equidigital number, since it uses as much as digits as its factorization.

245317027651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 245317027651 in words is "two hundred forty-five billion, three hundred seventeen million, twenty-seven thousand, six hundred fifty-one".