642464420530 has 16 divisors (see below), whose sum is σ = 1217301007680. Its totient is φ = 243460201392.

The previous prime is 642464420513. The next prime is 642464420557. The reversal of 642464420530 is 35024464246.

642464420530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1690695654 + ... + 1690696033.

It is an arithmetic number, because the mean of its divisors is an integer number (76081312980).

Almost surely, 2^642464420530 is an apocalyptic number.

642464420530 is a deficient number, since it is larger than the sum of its proper divisors (574836587150).

642464420530 is a wasteful number, since it uses less digits than its factorization.

642464420530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381391713.

The product of its (nonzero) digits is 552960, while the sum is 40.

Adding to 642464420530 its reverse (35024464246), we get a palindrome (677488884776).

The spelling of 642464420530 in words is "six hundred forty-two billion, four hundred sixty-four million, four hundred twenty thousand, five hundred thirty".