51435242450797 has 2 divisors, whose sum is σ = 51435242450798. Its totient is φ = 51435242450796.

The previous prime is 51435242450773. The next prime is 51435242450861. The reversal of 51435242450797 is 79705424253415.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32611740427561 + 18823502023236 = 5710669^2 + 4338606^2 .

It is a cyclic number.

It is not a de Polignac number, because 51435242450797 - 2³⁹ = 50885486636909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51435242450297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25717621225398 + 25717621225399.

It is an arithmetic number, because the mean of its divisors is an integer number (25717621225399).

Almost surely, 2^{51435242450797} is an apocalyptic number.

It is an amenable number.

51435242450797 is a deficient number, since it is larger than the sum of its proper divisors (1).

51435242450797 is an equidigital number, since it uses as much as digits as its factorization.

51435242450797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336000, while the sum is 58.

The spelling of 51435242450797 in words is "fifty-one trillion, four hundred thirty-five billion, two hundred forty-two million, four hundred fifty thousand, seven hundred ninety-seven".