633427905973 has 2 divisors, whose sum is σ = 633427905974. Its totient is φ = 633427905972.

The previous prime is 633427905949. The next prime is 633427906009. The reversal of 633427905973 is 379509724336.

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., 473973040849 + 159454865124 = 688457^2 + 399318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-633427905973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (633427905923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316713952986 + 316713952987.

It is an arithmetic number, because the mean of its divisors is an integer number (316713952987).

Almost surely, 2^633427905973 is an apocalyptic number.

It is an amenable number.

633427905973 is a deficient number, since it is larger than the sum of its proper divisors (1).

633427905973 is an equidigital number, since it uses as much as digits as its factorization.

633427905973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25719120, while the sum is 58.

The spelling of 633427905973 in words is "six hundred thirty-three billion, four hundred twenty-seven million, nine hundred five thousand, nine hundred seventy-three".