64420404145 has 16 divisors (see below), whose sum is σ = 77534599680. Its totient is φ = 51383073600.

The previous prime is 64420404121. The next prime is 64420404157. The reversal of 64420404145 is 54140402446.

It is not a de Polignac number, because 64420404145 - 2¹⁵ = 64420371377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64420404145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3587740 + ... + 3605650.

It is an arithmetic number, because the mean of its divisors is an integer number (4845912480).

Almost surely, 2^64420404145 is an apocalyptic number.

It is an amenable number.

64420404145 is a deficient number, since it is larger than the sum of its proper divisors (13114195535).

64420404145 is a wasteful number, since it uses less digits than its factorization.

64420404145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20016.

The product of its (nonzero) digits is 61440, while the sum is 34.

The spelling of 64420404145 in words is "sixty-four billion, four hundred twenty million, four hundred four thousand, one hundred forty-five".