664733337465 has 16 divisors (see below), whose sum is σ = 1109815659648. Its totient is φ = 339110340096.

The previous prime is 664733337421. The next prime is 664733337517. The reversal of 664733337465 is 564733337466.

It is not a de Polignac number, because 664733337465 - 2¹⁹ = 664732813177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 963381304 + ... + 963381993.

It is an arithmetic number, because the mean of its divisors is an integer number (69363478728).

Almost surely, 2^664733337465 is an apocalyptic number.

It is an amenable number.

664733337465 is a deficient number, since it is larger than the sum of its proper divisors (445082322183).

664733337465 is a wasteful number, since it uses less digits than its factorization.

664733337465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926763328.

The product of its digits is 68584320, while the sum is 57.

Subtracting from 664733337465 its reverse (564733337466), we obtain a palindrome (99999999999).

The spelling of 664733337465 in words is "six hundred sixty-four billion, seven hundred thirty-three million, three hundred thirty-seven thousand, four hundred sixty-five".