633427900997 has 2 divisors, whose sum is σ = 633427900998. Its totient is φ = 633427900996.

The previous prime is 633427900967. The next prime is 633427901009. The reversal of 633427900997 is 799009724336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 571605554116 + 61822346881 = 756046^2 + 248641^2 .

It is a cyclic number.

It is not a de Polignac number, because 633427900997 - 2²⁶ = 633360792133 is a prime.

It is a super-2 number, since 2×633427900997² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (633427900927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316713950498 + 316713950499.

It is an arithmetic number, because the mean of its divisors is an integer number (316713950499).

Almost surely, 2^633427900997 is an apocalyptic number.

It is an amenable number.

633427900997 is a deficient number, since it is larger than the sum of its proper divisors (1).

633427900997 is an equidigital number, since it uses as much as digits as its factorization.

633427900997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15431472, while the sum is 59.

The spelling of 633427900997 in words is "six hundred thirty-three billion, four hundred twenty-seven million, nine hundred thousand, nine hundred ninety-seven".