642230657179 has 2 divisors, whose sum is σ = 642230657180. Its totient is φ = 642230657178.

The previous prime is 642230657147. The next prime is 642230657191. The reversal of 642230657179 is 971756032246.

It is a happy number.

642230657179 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 642230657179 - 2⁵ = 642230657147 is a prime.

It is not a weakly prime, because it can be changed into another prime (642230657119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321115328589 + 321115328590.

It is an arithmetic number, because the mean of its divisors is an integer number (321115328590).

Almost surely, 2^642230657179 is an apocalyptic number.

642230657179 is a deficient number, since it is larger than the sum of its proper divisors (1).

642230657179 is an equidigital number, since it uses as much as digits as its factorization.

642230657179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 642230657179 in words is "six hundred forty-two billion, two hundred thirty million, six hundred fifty-seven thousand, one hundred seventy-nine".