64365665485 has 32 divisors (see below), whose sum is σ = 89128574208. Its totient is φ = 44162680320.

The previous prime is 64365665477. The next prime is 64365665519. The reversal of 64365665485 is 58456656346.

It is not a de Polignac number, because 64365665485 - 2³ = 64365665477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256162 + ... + 440851.

It is an arithmetic number, because the mean of its divisors is an integer number (2785267944).

Almost surely, 2^64365665485 is an apocalyptic number.

It is an amenable number.

64365665485 is a deficient number, since it is larger than the sum of its proper divisors (24762908723).

64365665485 is a wasteful number, since it uses less digits than its factorization.

64365665485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697125.

The product of its digits is 62208000, while the sum is 58.

The spelling of 64365665485 in words is "sixty-four billion, three hundred sixty-five million, six hundred sixty-five thousand, four hundred eighty-five".