64996454605 has 4 divisors (see below), whose sum is σ = 77995745532. Its totient is φ = 51997163680.

The previous prime is 64996454587. The next prime is 64996454657. The reversal of 64996454605 is 50645469946.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50645469946 = 2 ⋅25322734973.

It can be written as a sum of positive squares in 2 ways, for example, as 45618979396 + 19377475209 = 213586^2 + 139203^2 .

It is not a de Polignac number, because 64996454605 - 2⁵ = 64996454573 is a prime.

It is a super-2 number, since 2×64996454605² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 64996454605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6499645456 + ... + 6499645465.

It is an arithmetic number, because the mean of its divisors is an integer number (19498936383).

Almost surely, 2^64996454605 is an apocalyptic number.

It is an amenable number.

64996454605 is a deficient number, since it is larger than the sum of its proper divisors (12999290927).

64996454605 is a wasteful number, since it uses less digits than its factorization.

64996454605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12999290926.

The product of its (nonzero) digits is 27993600, while the sum is 58.

The spelling of 64996454605 in words is "sixty-four billion, nine hundred ninety-six million, four hundred fifty-four thousand, six hundred five".