642013473133 has 2 divisors, whose sum is σ = 642013473134. Its totient is φ = 642013473132.

The previous prime is 642013473131. The next prime is 642013473149. The reversal of 642013473133 is 331374310246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 641285444809 + 728028324 = 800803^2 + 26982^2 .

It is a cyclic number.

It is not a de Polignac number, because 642013473133 - 2¹ = 642013473131 is a prime.

Together with 642013473131, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 642013473092 and 642013473101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (642013473131) 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, 321006736566 + 321006736567.

It is an arithmetic number, because the mean of its divisors is an integer number (321006736567).

Almost surely, 2^642013473133 is an apocalyptic number.

It is an amenable number.

642013473133 is a deficient number, since it is larger than the sum of its proper divisors (1).

642013473133 is an equidigital number, since it uses as much as digits as its factorization.

642013473133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 37.

Adding to 642013473133 its reverse (331374310246), we get a palindrome (973387783379).

The spelling of 642013473133 in words is "six hundred forty-two billion, thirteen million, four hundred seventy-three thousand, one hundred thirty-three".