633422631240643 has 8 divisors (see below), whose sum is σ = 641220440646240. Its totient is φ = 625639948528320.

The previous prime is 633422631240587. The next prime is 633422631240673. The reversal of 633422631240643 is 346042136224336.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-633422631240643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (633422631240673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3781589055 + ... + 3781756552.

It is an arithmetic number, because the mean of its divisors is an integer number (80152555080780).

Almost surely, 2^{633422631240643} is an apocalyptic number.

633422631240643 is a deficient number, since it is larger than the sum of its proper divisors (7797809405597).

633422631240643 is an equidigital number, since it uses as much as digits as its factorization.

633422631240643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7563346637.

The product of its (nonzero) digits is 8957952, while the sum is 49.

Adding to 633422631240643 its reverse (346042136224336), we get a palindrome (979464767464979).

The spelling of 633422631240643 in words is "six hundred thirty-three trillion, four hundred twenty-two billion, six hundred thirty-one million, two hundred forty thousand, six hundred forty-three".