64324562465 has 4 divisors (see below), whose sum is σ = 77189474964. Its totient is φ = 51459649968.

The previous prime is 64324562437. The next prime is 64324562501. The reversal of 64324562465 is 56426542346.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56426542346 = 2 ⋅28213271173.

It can be written as a sum of positive squares in 2 ways, for example, as 11170798864 + 53153763601 = 105692^2 + 230551^2 .

It is a cyclic number.

It is not a de Polignac number, because 64324562465 - 2¹⁴ = 64324546081 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6432456242 + ... + 6432456251.

It is an arithmetic number, because the mean of its divisors is an integer number (19297368741).

Almost surely, 2^64324562465 is an apocalyptic number.

It is an amenable number.

64324562465 is a deficient number, since it is larger than the sum of its proper divisors (12864912499).

64324562465 is a wasteful number, since it uses less digits than its factorization.

64324562465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12864912498.

The product of its digits is 4147200, while the sum is 47.

The spelling of 64324562465 in words is "sixty-four billion, three hundred twenty-four million, five hundred sixty-two thousand, four hundred sixty-five".