64005400327 has 4 divisors (see below), whose sum is σ = 69824073096. Its totient is φ = 58186727560.

The previous prime is 64005400321. The next prime is 64005400343. The reversal of 64005400327 is 72300450046.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64005400327 - 2¹¹ = 64005398279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64005400321) 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 3 ways as a sum of consecutive naturals, for example, 2909336368 + ... + 2909336389.

It is an arithmetic number, because the mean of its divisors is an integer number (17456018274).

Almost surely, 2^64005400327 is an apocalyptic number.

64005400327 is a deficient number, since it is larger than the sum of its proper divisors (5818672769).

64005400327 is a wasteful number, since it uses less digits than its factorization.

64005400327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5818672768.

The product of its (nonzero) digits is 20160, while the sum is 31.

The spelling of 64005400327 in words is "sixty-four billion, five million, four hundred thousand, three hundred twenty-seven".