642651560483 has 2 divisors, whose sum is σ = 642651560484. Its totient is φ = 642651560482.

The previous prime is 642651560471. The next prime is 642651560491. The reversal of 642651560483 is 384065156246.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-642651560483 is a prime.

It is not a weakly prime, because it can be changed into another prime (642651260483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321325780241 + 321325780242.

It is an arithmetic number, because the mean of its divisors is an integer number (321325780242).

Almost surely, 2^642651560483 is an apocalyptic number.

642651560483 is a deficient number, since it is larger than the sum of its proper divisors (1).

642651560483 is an equidigital number, since it uses as much as digits as its factorization.

642651560483 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4147200, while the sum is 50.

The spelling of 642651560483 in words is "six hundred forty-two billion, six hundred fifty-one million, five hundred sixty thousand, four hundred eighty-three".