64484711951 has 4 divisors (see below), whose sum is σ = 70346958504. Its totient is φ = 58622465400.

The previous prime is 64484711947. The next prime is 64484712007. The reversal of 64484711951 is 15911748446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64484711951 - 2² = 64484711947 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 64484711951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64484711051) 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 3 ways as a sum of consecutive naturals, for example, 2931123260 + ... + 2931123281.

It is an arithmetic number, because the mean of its divisors is an integer number (17586739626).

Almost surely, 2^64484711951 is an apocalyptic number.

64484711951 is a deficient number, since it is larger than the sum of its proper divisors (5862246553).

64484711951 is a wasteful number, since it uses less digits than its factorization.

64484711951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5862246552.

The product of its digits is 967680, while the sum is 50.

The spelling of 64484711951 in words is "sixty-four billion, four hundred eighty-four million, seven hundred eleven thousand, nine hundred fifty-one".