64365665451 has 8 divisors (see below), whose sum is σ = 85822069200. Its totient is φ = 42909852672.

The previous prime is 64365665447. The next prime is 64365665477. The reversal of 64365665451 is 15456656346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64365665451 - 2² = 64365665447 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 64365665394 and 64365665403.

It is not an unprimeable number, because it can be changed into a prime (64365665411) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 301831 + ... + 468863.

It is an arithmetic number, because the mean of its divisors is an integer number (10727758650).

Almost surely, 2^64365665451 is an apocalyptic number.

64365665451 is a deficient number, since it is larger than the sum of its proper divisors (21456403749).

64365665451 is a wasteful number, since it uses less digits than its factorization.

64365665451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295485.

The product of its digits is 7776000, while the sum is 51.

The spelling of 64365665451 in words is "sixty-four billion, three hundred sixty-five million, six hundred sixty-five thousand, four hundred fifty-one".