642013473071 has 2 divisors, whose sum is σ = 642013473072. Its totient is φ = 642013473070.

The previous prime is 642013473007. The next prime is 642013473097. The reversal of 642013473071 is 170374310246.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 642013473071 - 2⁶ = 642013473007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (642013473001) 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, 321006736535 + 321006736536.

It is an arithmetic number, because the mean of its divisors is an integer number (321006736536).

Almost surely, 2^642013473071 is an apocalyptic number.

642013473071 is a deficient number, since it is larger than the sum of its proper divisors (1).

642013473071 is an equidigital number, since it uses as much as digits as its factorization.

642013473071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 38.

The spelling of 642013473071 in words is "six hundred forty-two billion, thirteen million, four hundred seventy-three thousand, seventy-one".