642464353507 has 2 divisors, whose sum is σ = 642464353508. Its totient is φ = 642464353506.

The previous prime is 642464353429. The next prime is 642464353523. The reversal of 642464353507 is 705353464246.

642464353507 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 642464353507 - 2¹⁹ = 642463829219 is a prime.

It is not a weakly prime, because it can be changed into another prime (642464353567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321232176753 + 321232176754.

It is an arithmetic number, because the mean of its divisors is an integer number (321232176754).

Almost surely, 2^642464353507 is an apocalyptic number.

642464353507 is a deficient number, since it is larger than the sum of its proper divisors (1).

642464353507 is an equidigital number, since it uses as much as digits as its factorization.

642464353507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7257600, while the sum is 49.

The spelling of 642464353507 in words is "six hundred forty-two billion, four hundred sixty-four million, three hundred fifty-three thousand, five hundred seven".