64650232569 has 32 divisors (see below), whose sum is σ = 98311981824. Its totient is φ = 37436774400.

The previous prime is 64650232541. The next prime is 64650232573. The reversal of 64650232569 is 96523205646.

It is not a de Polignac number, because 64650232569 - 2⁸ = 64650232313 is a prime.

It is a super-2 number, since 2×64650232569² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64650232579) 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 31 ways as a sum of consecutive naturals, for example, 5472469 + ... + 5484269.

It is an arithmetic number, because the mean of its divisors is an integer number (3072249432).

Almost surely, 2^64650232569 is an apocalyptic number.

It is an amenable number.

64650232569 is a deficient number, since it is larger than the sum of its proper divisors (33661749255).

64650232569 is a wasteful number, since it uses less digits than its factorization.

64650232569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20097.

The product of its (nonzero) digits is 2332800, while the sum is 48.

The spelling of 64650232569 in words is "sixty-four billion, six hundred fifty million, two hundred thirty-two thousand, five hundred sixty-nine".