634733343157 has 2 divisors, whose sum is σ = 634733343158. Its totient is φ = 634733343156.

The previous prime is 634733343137. The next prime is 634733343187. The reversal of 634733343157 is 751343337436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323412865636 + 311320477521 = 568694^2 + 557961^2 .

It is a cyclic number.

It is not a de Polignac number, because 634733343157 - 2¹⁹ = 634732818869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 634733343157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634733343137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317366671578 + 317366671579.

It is an arithmetic number, because the mean of its divisors is an integer number (317366671579).

Almost surely, 2^634733343157 is an apocalyptic number.

It is an amenable number.

634733343157 is a deficient number, since it is larger than the sum of its proper divisors (1).

634733343157 is an equidigital number, since it uses as much as digits as its factorization.

634733343157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5715360, while the sum is 49.

The spelling of 634733343157 in words is "six hundred thirty-four billion, seven hundred thirty-three million, three hundred forty-three thousand, one hundred fifty-seven".