64199655605 has 16 divisors (see below), whose sum is σ = 79068000960. Its totient is φ = 50024675712.

The previous prime is 64199655577. The next prime is 64199655659. The reversal of 64199655605 is 50655699146.

It is a happy number.

It is not a de Polignac number, because 64199655605 - 2¹⁶ = 64199590069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1046819 + ... + 1106448.

It is an arithmetic number, because the mean of its divisors is an integer number (4941750060).

Almost surely, 2^64199655605 is an apocalyptic number.

It is an amenable number.

64199655605 is a deficient number, since it is larger than the sum of its proper divisors (14868345355).

64199655605 is a wasteful number, since it uses less digits than its factorization.

64199655605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2153428.

The product of its (nonzero) digits is 8748000, while the sum is 56.

The spelling of 64199655605 in words is "sixty-four billion, one hundred ninety-nine million, six hundred fifty-five thousand, six hundred five".