64513469578201 has 4 divisors (see below), whose sum is σ = 73729679517952. Its totient is φ = 55297259638452.

The previous prime is 64513469578177. The next prime is 64513469578223. The reversal of 64513469578201 is 10287596431546.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64513469578201 - 2¹⁵ = 64513469545433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64513469578201.

It is not an unprimeable number, because it can be changed into a prime (64513469578291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4608104969865 + ... + 4608104969878.

It is an arithmetic number, because the mean of its divisors is an integer number (18432419879488).

It is a 1-persistent number, because it is pandigital, but 2⋅64513469578201 = 129026939156402 is not.

Almost surely, 2^{64513469578201} is an apocalyptic number.

It is an amenable number.

64513469578201 is a deficient number, since it is larger than the sum of its proper divisors (9216209939751).

64513469578201 is an equidigital number, since it uses as much as digits as its factorization.

64513469578201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9216209939750.

The product of its (nonzero) digits is 43545600, while the sum is 61.

The spelling of 64513469578201 in words is "sixty-four trillion, five hundred thirteen billion, four hundred sixty-nine million, five hundred seventy-eight thousand, two hundred one".