64360728201 has 40 divisors (see below), whose sum is σ = 109211841504. Its totient is φ = 33434103360.

The previous prime is 64360728197. The next prime is 64360728209. The reversal of 64360728201 is 10282706346.

It is a happy number.

It is not a de Polignac number, because 64360728201 - 2² = 64360728197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64360728201.

It is not an unprimeable number, because it can be changed into a prime (64360728209) 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 39 ways as a sum of consecutive naturals, for example, 326916 + ... + 485381.

Almost surely, 2^64360728201 is an apocalyptic number.

It is an amenable number.

64360728201 is a deficient number, since it is larger than the sum of its proper divisors (44851113303).

64360728201 is an equidigital number, since it uses as much as digits as its factorization.

64360728201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812339 (or 812318 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 64360728201 in words is "sixty-four billion, three hundred sixty million, seven hundred twenty-eight thousand, two hundred one".