64420642441603 has 16 divisors (see below), whose sum is σ = 77570487161856. Its totient is φ = 52304138552160.

The previous prime is 64420642441537. The next prime is 64420642441619. The reversal of 64420642441603 is 30614424602446.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64420642441603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64420642481603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1942353388 + ... + 1942386553.

It is an arithmetic number, because the mean of its divisors is an integer number (4848155447616).

Almost surely, 2^{64420642441603} is an apocalyptic number.

64420642441603 is a deficient number, since it is larger than the sum of its proper divisors (13149844720253).

64420642441603 is a wasteful number, since it uses less digits than its factorization.

64420642441603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3884740074.

The product of its (nonzero) digits is 2654208, while the sum is 46.

The spelling of 64420642441603 in words is "sixty-four trillion, four hundred twenty billion, six hundred forty-two million, four hundred forty-one thousand, six hundred three".