64466404461 has 6 divisors (see below), whose sum is σ = 93118139790. Its totient is φ = 42977602968.

The previous prime is 64466404459. The next prime is 64466404507. The reversal of 64466404461 is 16440466446.

It can be written as a sum of positive squares in only one way, i.e., 40887266436 + 23579138025 = 202206^2 + 153555^2 .

It is not a de Polignac number, because 64466404461 - 2¹ = 64466404459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64466404411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3581466906 + ... + 3581466923.

It is an arithmetic number, because the mean of its divisors is an integer number (15519689965).

Almost surely, 2^64466404461 is an apocalyptic number.

It is an amenable number.

64466404461 is a deficient number, since it is larger than the sum of its proper divisors (28651735329).

64466404461 is a wasteful number, since it uses less digits than its factorization.

64466404461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7162933835 (or 7162933832 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 45.

The spelling of 64466404461 in words is "sixty-four billion, four hundred sixty-six million, four hundred four thousand, four hundred sixty-one".