633490112471851 has 2 divisors, whose sum is σ = 633490112471852. Its totient is φ = 633490112471850.

The previous prime is 633490112471849. The next prime is 633490112471873. The reversal of 633490112471851 is 158174211094336.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 633490112471851 - 2¹ = 633490112471849 is a prime.

Together with 633490112471849, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 633490112471792 and 633490112471801.

It is not a weakly prime, because it can be changed into another prime (633490112471891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316745056235925 + 316745056235926.

It is an arithmetic number, because the mean of its divisors is an integer number (316745056235926).

It is a 1-persistent number, because it is pandigital, but 2⋅633490112471851 = 1266980224943702 is not.

Almost surely, 2^{633490112471851} is an apocalyptic number.

633490112471851 is a deficient number, since it is larger than the sum of its proper divisors (1).

633490112471851 is an equidigital number, since it uses as much as digits as its factorization.

633490112471851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 633490112471851 in words is "six hundred thirty-three trillion, four hundred ninety billion, one hundred twelve million, four hundred seventy-one thousand, eight hundred fifty-one".