642324248663 has 2 divisors, whose sum is σ = 642324248664. Its totient is φ = 642324248662.

The previous prime is 642324248653. The next prime is 642324248723. The reversal of 642324248663 is 366842423246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 642324248663 - 2²⁸ = 642055813207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (642324248603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321162124331 + 321162124332.

It is an arithmetic number, because the mean of its divisors is an integer number (321162124332).

Almost surely, 2^642324248663 is an apocalyptic number.

642324248663 is a deficient number, since it is larger than the sum of its proper divisors (1).

642324248663 is an equidigital number, since it uses as much as digits as its factorization.

642324248663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7962624, while the sum is 50.

The spelling of 642324248663 in words is "six hundred forty-two billion, three hundred twenty-four million, two hundred forty-eight thousand, six hundred sixty-three".