64999999484449 has 4 divisors (see below), whose sum is σ = 65000054943664. Its totient is φ = 64999944025236.

The previous prime is 64999999484363. The next prime is 64999999484467. The reversal of 64999999484449 is 94448499999946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64999999484449 - 2¹¹ = 64999999482401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64999999484549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25932747 + ... + 28328560.

It is an arithmetic number, because the mean of its divisors is an integer number (16250013735916).

Almost surely, 2^{64999999484449} is an apocalyptic number.

It is an amenable number.

64999999484449 is a deficient number, since it is larger than the sum of its proper divisors (55459215).

64999999484449 is a wasteful number, since it uses less digits than its factorization.

64999999484449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55459214.

The product of its digits is 235092492288, while the sum is 97.

The spelling of 64999999484449 in words is "sixty-four trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, four hundred eighty-four thousand, four hundred forty-nine".