64321409453 has 16 divisors (see below), whose sum is σ = 73863280896. Its totient is φ = 54868302720.

The previous prime is 64321409431. The next prime is 64321409459. The reversal of 64321409453 is 35490412346.

It is not a de Polignac number, because 64321409453 - 2⁸ = 64321409197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64321409453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64321409459) by changing a digit.

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, 1598975 + ... + 1638707.

It is an arithmetic number, because the mean of its divisors is an integer number (4616455056).

Almost surely, 2^64321409453 is an apocalyptic number.

It is an amenable number.

64321409453 is a deficient number, since it is larger than the sum of its proper divisors (9541871443).

64321409453 is a wasteful number, since it uses less digits than its factorization.

64321409453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40844.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 64321409453 in words is "sixty-four billion, three hundred twenty-one million, four hundred nine thousand, four hundred fifty-three".