642465310001 has 2 divisors, whose sum is σ = 642465310002. Its totient is φ = 642465310000.

The previous prime is 642465309991. The next prime is 642465310141. The reversal of 642465310001 is 100013564246.

642465310001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 377290777600 + 265174532401 = 614240^2 + 514951^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-642465310001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 642465310001.

It is not a weakly prime, because it can be changed into another prime (642465313001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321232655000 + 321232655001.

It is an arithmetic number, because the mean of its divisors is an integer number (321232655001).

Almost surely, 2^642465310001 is an apocalyptic number.

It is an amenable number.

642465310001 is a deficient number, since it is larger than the sum of its proper divisors (1).

642465310001 is an equidigital number, since it uses as much as digits as its factorization.

642465310001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 642465310001 its reverse (100013564246), we get a palindrome (742478874247).

The spelling of 642465310001 in words is "six hundred forty-two billion, four hundred sixty-five million, three hundred ten thousand, one".