64956992099 has 4 divisors (see below), whose sum is σ = 65161904064. Its totient is φ = 64752080136.

The previous prime is 64956992041. The next prime is 64956992101. The reversal of 64956992099 is 99029965946.

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 64956992099 - 2⁸ = 64956991843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64956922099) 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, 102455507 + ... + 102456140.

It is an arithmetic number, because the mean of its divisors is an integer number (16290476016).

Almost surely, 2^64956992099 is an apocalyptic number.

64956992099 is a deficient number, since it is larger than the sum of its proper divisors (204911965).

64956992099 is a wasteful number, since it uses less digits than its factorization.

64956992099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204911964.

The product of its (nonzero) digits is 85030560, while the sum is 68.

The spelling of 64956992099 in words is "sixty-four billion, nine hundred fifty-six million, nine hundred ninety-two thousand, ninety-nine".