634466988541 has 2 divisors, whose sum is σ = 634466988542. Its totient is φ = 634466988540.

The previous prime is 634466988527. The next prime is 634466988577. The reversal of 634466988541 is 145889664436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 547355827225 + 87111161316 = 739835^2 + 295146^2 .

It is a cyclic number.

It is not a de Polignac number, because 634466988541 - 2⁵ = 634466988509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634466988511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317233494270 + 317233494271.

It is an arithmetic number, because the mean of its divisors is an integer number (317233494271).

Almost surely, 2^634466988541 is an apocalyptic number.

It is an amenable number.

634466988541 is a deficient number, since it is larger than the sum of its proper divisors (1).

634466988541 is an equidigital number, since it uses as much as digits as its factorization.

634466988541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119439360, while the sum is 64.

The spelling of 634466988541 in words is "six hundred thirty-four billion, four hundred sixty-six million, nine hundred eighty-eight thousand, five hundred forty-one".